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Zoological results of the third de Schauensee Siamese Expedition. Part VIII - Fishes obtained in 1936
... There are totally seven valid species in Mekong, Chao Phraya and Maeklong basins in Thailand, Laos and Cambodia (Kottelat, 2012;, viz. Yasuhikotakia caudipunctata (Taki et Doi, 1995), Y. eos (Taki, 1972), Y. lecontei (Fowler, 1937), Y. longidorsalis (Taki et Doi, 1995), Y. modesta (Bleeker, 1864), Y. morleti (Tirant, 1885) and Y. splendida (Roberts, 1995), respectively. ...
... BD: body depth; BW: body width; ex.: examined specimens; SL: standard length; TL: total length; HL: head length. (Fowler, 1937) Botia lecontei -Fowler, 1937 DESCRIPTIoN. The examined specimen matches well diagnoses of Y. lecontei based on its original description (Fowler, 1937) and Kottelat (2001): 9 branched dorsal-fin rays (7-9 in original description) and 3 simple rays; pelvic fin almost reaching anus; suborbital spine bifid, curvulate, its tip of the long spine extending to posterior margin of eye and the short one reaching midpoint of eye, erect ethmoid spine parallel to horizontal axis of eye; relatively large mental lobe; a pair of papillae in lower jaw; a large blackish blotch on caudal peduncle, not extending to upper edge; incomplete lateral line (Fig. 2); total vertebrae 35 (Fig. 3). ...
... BD: body depth; BW: body width; ex.: examined specimens; SL: standard length; TL: total length; HL: head length. (Fowler, 1937) Botia lecontei -Fowler, 1937 DESCRIPTIoN. The examined specimen matches well diagnoses of Y. lecontei based on its original description (Fowler, 1937) and Kottelat (2001): 9 branched dorsal-fin rays (7-9 in original description) and 3 simple rays; pelvic fin almost reaching anus; suborbital spine bifid, curvulate, its tip of the long spine extending to posterior margin of eye and the short one reaching midpoint of eye, erect ethmoid spine parallel to horizontal axis of eye; relatively large mental lobe; a pair of papillae in lower jaw; a large blackish blotch on caudal peduncle, not extending to upper edge; incomplete lateral line (Fig. 2); total vertebrae 35 (Fig. 3). ...
Two species of small freshwater fishes of Botiidae and Cyprinidae families of SE Asia were
collected during field ichthyofauna surveys in lower Lancangjiang, Mekong basin before raining
season in 2015. Both Yasuhikotakia lecontei (Fowler, 1937) (Teleostei Botiidae) and
Brachydanio rosea (Fang et Kottelat, 2000) (Teleostei Cyprinidae) are new records to China,
and the genus Yasuhikotakia Nalbant, 2002 is firstly recorded in China. The occurrence of
the two species in Xishuangbanna Prefecture, Yunnan Province is most likely a natural
extension of their distributional range. The meristics and measurements of the specimens,
diagnosis, photographs, radiographs and distribution map of the two newly recorded species
are provided.
... Schistura myrmekia (Fowler 1935) was originally described from a single specimen collected from Keng Sok, southwestern Thailand. It was differentiated from a similar species, S. desmotes (Fowler 1934), by having four-rather than three-dark bands behind the dorsal fin, and the presence of a wart-like suborbital flap. ...
... Introduction Fowler (1935) described Nemacheilus myrmekia from a single specimen 58 mm in total length (ANSP 63546) collected from Keng Sok in southwestern Thailand (Fig. 1A). Nemacheilus myrmekia was differentiated from Nemacheilus desmotes Fowler 1934 (Fig. 2), a species in which Fowler noted that the "color pattern greatly resembles" that of N. myrmekia, by having four rather than three dark bands behind the dorsal fin, and the presence of a "wart-like flap or spine" under the eye (the latter now usually referred to as a suborbital flap). ...
... Some of the color pattern remains, including small dark spots on top of the head and eight dark bars along the side, more or less equal in width to the paler interspaces. As described by Fowler (1935) three of the bars precede the dorsal fin, one is under the fin, and four occur postdorsally. A dark bar is still visible at the base of the caudal fin and extends the depth of the peduncle, touching the dorsal and ventral margins of the peduncle. ...
Schistura myrmekia (Fowler 1935) was originally described from a single specimen collected from Keng Sok, southwestern Thailand. It was differentiated from a similar species, S. desmotes (Fowler 1934), by having four-rather than three-dark bands behind the dorsal fin, and the presence of a wart-like suborbital flap. Although S. myrmekia has since been placed in the synonymy of S. desmotes, it is distinguishable by the size and orientation of the suborbital flap, a much shorter maxillary barbel, and a more slender appearance. The holotype, the only known specimen of S. myrmekia, is redescribed and contrasted with other species of Schistura in southern Thailand. Schistura myrmekia is known only from the holotype, collected in an area that recently has been highly modified by human activities. Recent efforts to find the species have failed, and it is probably extinct.
... m, and a combination of rock and sand on the bottom. We found specimens of Crossocheilus reticulatus (Fowler, 1934) (Cypriniformes Cyprinidae), Pangio anguillaris (Vaillant, 1902) and P. oblonga (Valenciennes, 1846) (Cypriniformes Cobitidae) in Chanthaburi Province. Three species are new r ecords in this area and are reported for the first time in this paper; for previous reviews, see Fowler, 1934; Smith, 1945; Sontirat, 1976; Suvatti, 1981; Karnasuta, 1993; Kottelat & Lim, 1993; Monkolprasit et al., 1997; Robert, 1997; Robert, 1998; Ng & Kottelat, 2000; Soonthornkit, 2001; Sontirat et al., 2006). ...
... ) Barilius koratensis (Smith, 1931) Cirrhinus microlepis Sauvage, 1878 Crossocheilus reticulatus (Fowler, 1934) Cyclocheilichthys apogon (Valenciennes, 1842) Danio albolineatus (Blyth, 1860) Esomus metallicus Ahl, 1923 Garra fasciacauda Fowler, 1937 Garra cambodgiensis (Tirant, 1883) Hampala macrolepidota Kuhl et Van Hasselt, 1823 Hypsibarbus vernayi (Norman, 1925) Labiobarbus leptocheila (Valenciennes, 1842) Labiobarbus lineatus (Sauvage, 1878) Laubuca siamensis Fowler, 1939 Mystacoleucus marginatus (Valenciennes, 1842) Neolissochilus sumatranus (Weber et de Beaufort, 1916) Neolissochilus stracheyi (Day, 1871) SITTHI KULABTONG ET ALII ...
... Family ANABANTIDAE Bonaparte, 1831 Anabas testudineus (Bloch, 1792) Family OSPHRONEMIDAE van der Hoeven, 1832 Betta taeniata Regan, 1910 Betta prima Kottelat, 1994 Trichogaster trichopterus (Pallas, 1770) Trichopsis pumila (Arnold, 1936) Trichopsis vittata (Cuvier, 1831) Family CHANNIDAE Fowler, 1934 Channa gachua (Hamilton, 1822) Channa lucius (Cuvier, 1831) Channa striata (Bloch, 1793) ...
The present paper reports on a catalogue of inland fishes in Chanthaburi Province, Eastern Gulf of Thailand Drainages. All the species encountered in this region, belonging to 18 orders, 73 families and 229 species, are listed. In particular, Crossocheilus reticulatus (Fowler, 1934) (Cypriniformes Cyprinidae), Pangio anguillaris (Vaillant, 1902) and P. oblonga (Valenciennes, 1846) (Cypriniformes Cobitidae) are new records for Chanthaburi Province, entered in December 2007 and February 2012; description and distribution data of the three new records are provided here.
... Schistura myrmekia (Fowler 1935) was originally described from a single specimen collected from Keng Sok, southwestern Thailand. It was differentiated from a similar species, S. desmotes (Fowler 1934), by having four-rather than three-dark bands behind the dorsal fin, and the presence of a wart-like suborbital flap. ...
... Introduction Fowler (1935) described Nemacheilus myrmekia from a single specimen 58 mm in total length (ANSP 63546) collected from Keng Sok in southwestern Thailand (Fig. 1A). Nemacheilus myrmekia was differentiated from Nemacheilus desmotes Fowler 1934 (Fig. 2), a species in which Fowler noted that the "color pattern greatly resembles" that of N. myrmekia, by having four rather than three dark bands behind the dorsal fin, and the presence of a "wart-like flap or spine" under the eye (the latter now usually referred to as a suborbital flap). ...
... Some of the color pattern remains, including small dark spots on top of the head and eight dark bars along the side, more or less equal in width to the paler interspaces. As described by Fowler (1935) three of the bars precede the dorsal fin, one is under the fin, and four occur postdorsally. A dark bar is still visible at the base of the caudal fin and extends the depth of the peduncle, touching the dorsal and ventral margins of the peduncle. ...
Schistura myrmekia (Fowler 1935) was originally described from a single specimen collected from Keng Sok,
southwestern Thailand. It was differentiated from a similar species, S. desmotes (Fowler 1934), by having four—rather than three—dark bands behind the dorsal fin, and the presence of a wart-like suborbital flap. Although S. myrmekia has since been placed in the synonymy of S. desmotes, it is distinguishable by the size and orientation of the suborbital flap, a much shorter maxillary barbel, and a more slender appearance. The holotype, the only known specimen of S. myrmekia, is redescribed and contrasted with other species of Schistura in southern Thailand. Schistura myrmekia is known only from the holotype, collected in an area that recently has been highly modified by human activities. Recent efforts to find the species have failed, and it is probably extinct.
... Species of Heteropneustes Muller (Siluriformes: Heteropneustidae), the Asian stinging catfishes, are commercially important freshwater fishes distributed throughout the south and southeast Asian countries. Silurus (Bloch 1794;Hamilton 1822;Swainson 1939), Saccobranchus (Valenciennes 1840; Jerdon 1849; Gunther 1864) and Clarisilurus (Fowler 1937) are the diverse names assigned to the genus by various taxonomists. The body of Heteropneustes is elongated, the head is depressed and covered with osseous plates and has four pairs of barbels. ...
... Heteropneustes fuscus differs from H. nani Hossain et al. (2013) in having a greater number of anal fin (72-75 vs. 66-69) and caudal fin rays (14-16 vs. 10-12) and anal fin being not confluent with caudal fin (vs. a confluent anal and caudal fin). The new species differs from Heteropneustes kemratensis Fowler (1937) in having fewer anal-fin rays (72-75 vs. 75-84), fewer (8 vs. 9) pectoral fin rays, wider (90.0-92.0% HL vs. 85-86) head and a prominent orbit (eye diameter 15.0-17.6% ...
Plamoottil M. 2021. Heteropneustes fuscus (Siluriformes: Heteropneustidae), a new catfish species from Kerala, India. Biodiversitas 22: 87-98. Heteropneustes fuscus, a new catfish species, is described from Kerala, India; it is a close congener of Heteropneustes fossilis (Bloch, 1794) described from Tranquebar in Tamil Nadu. Heteropneustes fuscus has been misidentified as H. fossilis until now, but it differs from Bloch's species in color and many other rigid taxonomic variables. The new species can be distinguished from its relative species in the following combination of characters: deep black body and fins, 4-5 branched dorsal-fin soft rays, 72-75 anal fin rays, 58-60 total vertebrae, 26-32 total gill rakers; deeper and wider body; deeper caudal peduncle; greater pre occipital and post occipital distances and longer anal fin. The new fish is edible and found in freshwater rivers, streams, ponds and paddy fields in Kerala. It is also cultivated in some artificial impoundments. Heteropneustes fuscus is compared with its congeners, scientifically named and taxonomically described.
... Type specimens from Fowler (1934Fowler ( , 1935Fowler ( , 1937 and Smith (1945) are color-coded. HKYþI, F81, and HKY models were subsequently implemented for codon positions one, two, and three, respectively, in a Bayesian phylogenetic analysis conducted in MrBayes version 3.2.1 (Ronquist et al., 2012). ...
... Finally, two putative species were reported to possess nine lateral stripes: L. davisi and L. thavili. The holotype of L. davisi has a single, distinct stripe along the midline, with scales above and below this stripe possessing dark crescents forming a reticulated pattern which likely led to the reporting of nine stripes by Fowler (1937). This pattern was observed in other similarly sized specimens. ...
The cyprinid genus Lobocheilos in mainland Southeast Asia has a complex taxonomic history, with 12 nominal species described in the early- to mid-20th Century from Thailand, Laos, and Vietnam by several authors based primarily on lateral melanin pigmentation and morphometric data. More recent works tentatively recognize anywhere from two to six valid species in the region. The goal of this study was to examine morphological variation between these putative species to determine if they represent distinct species. Examinations of 445 specimens, including all available type material, from throughout the region failed to define morphologically distinct groups or any differences between allopatric populations in the major zoogeographic regions in the area. Furthermore, an ontogenetic pattern of lateral melanin pigmentation was identified that has likely contributed to taxonomic confusion. One species is recognized from this region, with the oldest available name being L. rhabdoura (Fowler, 1934). Lobocheilos rhabdoura is herein redescribed, and phylogenetic relationships of populations throughout the region are reconstructed. © 2016 by the American Society of Ichthyologists and Herpetologists.
... Two of the remaining three species, Trichogaster pectoralis and Scatophagus argus, are absent among materials collected by us but have been included in the recently summarized checklist of the island's ichthyofauna. The situation with the third species, "Clarias catarac tus (Fowler, 1939)," listed by Nezdoliy et al. (2005Nezdoliy et al. ( , 2011 among the species recorded for the first time from the fauna of Vietnam, requires additional com ments. ...
... Currently, the species Clarias cataractus (Fowler, 1939), described from waters of Siam (modern Thai land), is usually considered a junior synonym of C. lei acanthus Beeker, 1851 (Sudarto et al., 2003(Sudarto et al., , 2004. It belongs to a group of species of the genus that are char acterized by a relatively short body, 62-74 rays in the dorsal fin, and a long distance from the tip of the pro cess of the supraoccipital bone to the base of the dorsal fin, equal to 7.1-12.5% ...
... Under this new genus, we assign the new species which is collected from north-ern Laos. Rhinogobius ocellatus (Fowler, 1937) from the Mekong basin is morphologically similar to the new species and is also included into the new genus. ...
... Papuligobius ocellatus (Fowler, 1937) was originally described as Tukagobius ocellatus. Tukagobius is an incorrect subsequent spelling of Tukugobius Herre, 1927, a junior subjective synonym of Rhinogobius Gill, 1859 (Chen & Shao, 1996;Chen et al., 1999). ...
... The species can be distinguished by their elongated and compressed bodies, small mouth with fleshy lips, short dorsal fin, pectoral fin with serrated spine and ribbonlike longer anal fin. Four nominal species of Heteropneustes are described (Ferreris, 2007) namely Heteropneustes fossilis Bloch (1794) from Tamil Nadu of India, H. microps Günther (1864) from Dambuwa of Sri Lanka, H. kemratensis Fowler (1937) from the Chao Praya River of Thailand, and H. longipectoralis Devi & raGhunathan (1999) from Western Ghats of India. PethiyaGoDa & Bahir (1998) suggested H. microps as synonymous to H. fos silis, because the occurrence of fused conjoined anal and caudal fins, which is a distinct character of H. microps, may arise in wild populations (~2%) of Heteropneustes due to an injury. ...
... Moreover, H. nani is also readily distinguishable from its congeners by the fin formula of D 6 -7, P I/6 -7, V 6 -7, A 66 -69, C 10 -12. In case of H. fossilis, it is D 6 -7, P I/7, V 6, A 60 -79, C 19 (Day 1878); D I -II/5, P I/5 -6, V I/6, A+C 72 -74 for H. microps (arunachalam et al., 1999); D I/5, P I/8, V I/5, A 75 -84 for H. kemratensis (Fowler, 1937) and D 7, P I/8 -9, V 6, A 66 -73, C 18 for H. longipectoralis (Devi & raGhunathan, 1999). ...
The Meghna deltaic region in Noakhali, Bangladesh is endowed with favourable diverse freshwater ecosystems for varieties of fishes. Here a new species, Heteropneustes nani sp. nov. is described after detailed morphological examination and careful comparisons with other congeners. The new species H. nani differs from other congeners in having shortest standard length, greater head length than body depth, terminal mouth with equal jaws, separated pectoral spine from rays and bears antrorse serrae along entire inner and outer edges, and united anal and caudal fin.
... Two of the remaining three species, Trichogaster pectoralis and Scatophagus argus, are absent among materials collected by us but have been included in the recently summarized checklist of the island's ichthyofauna. The situation with the third species, "Clarias catarac tus (Fowler, 1939)," listed by Nezdoliy et al. (2005Nezdoliy et al. ( , 2011 among the species recorded for the first time from the fauna of Vietnam, requires additional com ments. ...
... Currently, the species Clarias cataractus (Fowler, 1939), described from waters of Siam (modern Thai land), is usually considered a junior synonym of C. lei acanthus Beeker, 1851 (Sudarto et al., 2003(Sudarto et al., , 2004. It belongs to a group of species of the genus that are char acterized by a relatively short body, 62-74 rays in the dorsal fin, and a long distance from the tip of the pro cess of the supraoccipital bone to the base of the dorsal fin, equal to 7.1-12.5% ...
We performed the first large-scale study of the species structure of the fishes living in the inland water bodies of Phu Quoc Island and identified 97 species of bony fishes, which represent 41 families of 13 orders. Taking into account the results of earlier studies, we compiled a total checklist of the island’s ich-thyofauna, which includes 99 species; one more species recorded in a previous publication on the ichthyo-fauna of the island can be added to this number, as well as 15–20 mostly euryhaline species, which needed clarification of their states. Only one species on the checklist, Oreochromis niloticus, has been introduced to the island; 14 species, mostly of the family Gobiidae, have never been recorded in the faunas of other regions of Vietnam. Two new species, probably endemic to the island, have been found and described (in the genera Rasbora and Barbucca). Two more species of the order Siluriformes should probably also be described as new.
... Five nominal species of Heteropnuestes are described, namely H. microps (Pethiyagoda and Bahir, 1998) and H. longipectrolis (Devi and Raghunathan, 1999) from Western Ghats, India; H. kemratensis (Fowler, 1937) from the Chao Praya River in Thailand; H. fossilis (Bloch, 1794) from Tamil Nadu, India; and H. nani from Noakhali, Bangladesh (Hossain et al., 2013). Heteropneustes nani stands out from its relatives due to its notably smaller size, with an average length of 98.08 mm from the snout to the tail (compared to 223.96 mm in H. fossilis, 152.40 mm in H. microops, 210.00 mm in H. kemratensis, and 150.00 mm in H. longipectoralis). ...
The Stinging catfish (Heteropnuestes nani) was described in 2013 from the Noakhali
of Bangladesh through detailed morphological characterization. They differ significantly from their congeners based on small size, completely separated pectoral spine from rays bearing 9–10 serrae along the inner edge and united anal-caudal fin. In Nepal, only one species of Heteropnuestes, i.e., H. fossilis has been reported. Based on the morphometric and meristic characteristics, this study reports the first-ever record of another species (H. nani) under the genus from eight locations in Jhapa District, eastern lowland Nepal, along with H. fossilis
records. The two species distinctly differ, with H. nani conspicuously smaller than H. fossilis. Heteropnuestes nani has been recorded from nutrient-rich, shallow, and turbid water bodies with abundant invasive aquatic macrophytes (Eichhornia crassipes, Hydrilla verticillata, and Ceratophyllum submersum). The type locality of the H. nani in Bangladesh and the newly reported locality in Nepal share similar tropical monsoon climates and river connectivity that might have facilitated their dispersal. Further studies are warranted to understand the detailed taxonomy and distribution pattern of H. nani in Nepal.
... Five nominal species of Heteropnuestes are described, namely H. microps (Pethiyagoda and Bahir, 1998) and H. longipectrolis (Devi and Raghunathan, 1999) from Western Ghats, India; H. kemratensis (Fowler, 1937) from the Chao Praya River in Thailand; H. fossilis (Bloch, 1794) from Tamil Nadu, India; and H. nani from Noakhali, Bangladesh (Hossain et al., 2013). Heteropneustes nani stands out from its relatives due to its notably smaller size, with an average length of 98.08 mm from the snout to the tail (compared to 223.96 mm in H. fossilis, 152.40 mm in H. microops, 210.00 mm in H. kemratensis, and 150.00 mm in H. longipectoralis). ...
The Stinging catfish (Heteropnuestes nani) was described in 2013 from the Noakhali of Bangladesh through detailed morphological characterization. They differ significantly from their congeners based on small size, completely separated pectoral spine from rays bearing 9–10 serrae along the inner edge and united anal-caudal fin. In Nepal, only one species of Heteropnuestes, i.e., H. fossilis has been reported. Based on the morphometric and meristic characteristics, this study reports the first-ever record of another species (H. nani) under the genus from eight locations in Jhapa District, eastern lowland Nepal, along with H. fossilis records. The two species distinctly differ, with H. nani conspicuously smaller than H. fossilis. Heteropnuestes nani has been recorded from nutrient-rich, shallow, and turbid water bodies with abundant invasive aquatic macrophytes (Eichhornia crassipes, Hydrilla verticillata, and Ceratophyllum submersum). The type locality of the H. nani in Bangladesh and the newly reported locality in Nepal share similar tropical monsoon climates and river connectivity that might have facilitated their dispersal. Further studies are warranted to understand the detailed taxonomy and distribution pattern of H. nani in Nepal.
... Five nominal species of Heteropnuestes are described, namely H. microps (Pethiyagoda and Bahir, 1998) and H. longipectrolis (Devi and Raghunathan, 1999) from Western Ghats, India; H. kemratensis (Fowler, 1937) from the Chao Praya River in Thailand; H. fossilis (Bloch, 1794) from Tamil Nadu, India; and H. nani from Noakhali, Bangladesh (Hossain et al., 2013). Heteropneustes nani stands out from its relatives due to its notably smaller size, with an average length of 98.08 mm from the snout to the tail (compared to 223.96 mm in H. fossilis, 152.40 mm in H. microops, 210.00 mm in H. kemratensis, and 150.00 mm in H. longipectoralis). ...
... GenSeq designations were assigned following Chakrabarty et al. (2013). Cirrhinus microlepis Sauvage 1878 was designated as the outgroup, and Ceratogarra cambodgiensis (Tirant 1884) and C. fasciacauda (Fowler 1937) were included for topographic structure. ...
Garra panitvongi, new species, is described from the Ataran River drainage, Salween River basin, of southeastern Myanmar and western Thailand. It is the sixth species of Garra known from the Salween River basin and is readily distinguished from all congeners by the red-orange color of the body and caudal fin, and a pointed proboscis with a blue stripe on each side from the anterior margin of the orbit to the tip of the proboscis and with the stripes forming a V-shape. Garra panitvongi is known in the aquarium trade as the Redtail Garra. Descriptive information is provided on poorly known species of Garra in the Salween River basin, and Garra nujiangensis is transferred to Ageneiogarra.
... Fortunately, three species of Garra, Garra cambodgiensis (Tirant, 1884), G. fuliginosa (Fowler, 1937) and G. notata (Blyth, 1860), can be used as the artiicial breeding specimens in the ponds at Mae Hong Son and Nan Fisheries ...
This study provides new data on the developmental morphology for the identiication of three species of ish found in Thailand, stone-lapping minnows (Garra cambodgiensis), sooty garra (G. fuliginosa), and Tenassarim garra (G. notata). Larval specimens were collected from the artiicial breeding tanks and rearing ponds at the Mae Hong Son and Nan Fisheries Research Stations. The larvae were divided into four developmental stages, i.e., yolk sac, larval, post-larval, and juvenile. Their morphometric and meristic characteristics, including the number of myomere, dorsal-and anal-fin rays, and the chromatophore pigment patterns, were studied and used for the species identiication. For the Garra larvae, the chromatophore pigmentation on the gut, midline, and dorsal and ventral parts of the body were the important characteristics. In addition, the juvenile stage can be distinguished by the chromatophore pigmentation on the gut, midline, and the dorsal and ventral parts of the body
... Material identified as H. pJaniceps by previous authors (e.g. Fowler, 1937) has turned out to be H. d. nemuruf and as far as is known, H. planiceps is a species restricted to Java. Whether or not any ispecies belonging to the H. planiceps species-group (defined by Ng & Ng (1995) as species having an elongate body with 47-50 vertebrae, a body with no midaxial streak and the longest dorsal-fin ray not or just reaching the beginning of the adipose fin) occurs at all in central Indochina has yet to be established. ...
The species of the genus Hemibagrus from central Indochina (consisting of the Mae Klong, Chao Phraya, Bang Pakong and Mekong River drainages) have been reviewed. Out of the seven nominal species reported from this region, five are considered valid with one previously undescribed species described here as H. spilopterus, new species.
... Supplement 27 lists the core bibliography (178 pages' worth) and catalogue of all known valid fi sh species (3108) known to occur in the inland waters of Southeast Asia, in a massive 663-page tome, culmination of more than a quarter century's effort and tireless research (Kottelat, 2013). A total of fi ve new genera are made available: Desmopuntius Kottelat, 2013, type species Barbus hexazona Weber & de Beaufort, 1912; Oliotius Kottelat, 2013, type species Capoeta oligolepis Bleeker, 1853; Puntigrus Kottelat, 2013, type species Barbus partipentazona Fowler, 1934; Striuntius Kottelat, 2013, type species Barbus lineatus Duncker, 1904; Pao Kottelat, 2013, type species Tetraodon leiurus Bleeker, 1850. These two supplements are must-haves for all serious ichthyologists and bibliographers. ...
... The only character differentiating the holotype of H. maxinae (ANSP 68004) ( Fig. 2 and Table 2) from other B. zollingeri is head width (68.8% vs. 69.4-87.4% HL), which may be unreliable due to the poor condition of the holotype. See Smith (1945) for comments on miscounts in Fowler's (1937) original description of H. maxinae. Silas (1953) tentatively followed Smith's synonymization of H. maxinae, Rainboth (1996) treated H. maxinae as valid, and Kottelat (2012Kottelat ( , 2013 recognized it as a questionable junior synonym of Homalopteroides smithi (Hora 1932). ...
The genus Balitoropsis Smith 1945 consists of two species, B. zollingeri (Bleeker 1853) and B. ophiolepis (Bleeker 1853). Homaloptera maxinae Fowler 1937, Balitoropsis bartschi Smith 1945, and Homaloptera nigra Alfred 1969 are junior synonyms of B. zollingeri. Balitoropsis zollingeri has been reported from Thailand, Laos, Cambodia, Malay Peninsula, Sumatra, Java, and Borneo, and B. ophiolepis is known from Sumatra, Java, and Borneo.
... Baroche Hora, 1923: 165. -Chevey, 1932: 15. -Fowler, 19351937: 134. -Chevey & Le Poulain, 1940: 33. ...
... Kottelat (1990 also doubt the identification of S. thai from the Salween and Mekong basins in Yunnan by Zhu & Wang (1985). After comparing specimens of " S. thai " from the Mekong River and the Nanting (=Nanding) River in China, also with Kottelat's description (1990), we confirm that " S. thai " in the Mekong River of China is actually Schistura kengtungensis (Fowler, 1936); and we conclude that specimens from the Nanting River represent an undescribed species. ...
Schistura cryptofasciata is distinguished from its congeners by following combination characters: lateral line complete; 8 1 / 2 branched dorsal-fin rays; 9+8 branched caudal-fin rays; no sexual dimorphism; 8-11 indistinct bars, wider than interspaces; caudal-peduncle length 14.1-16.5% standard length, 68.1-90.4% dorsal head length; anterior portion of body scaleless; air bladder entirely embedded in bony capsule; lateral head length 104-122% dorsal head length; lower jaw with a notch at symphysis; lower lip completely interrupted; interorbital width 1.9-2.2 times eye diameter; pelvic-fin origin ventral to dorsal-fin origin; anus 1.0-1.5 eye diameters in front of anal-fin origin; the widest part of black basal caudal bar is the midlateral, and then the upper and lower ends.
The new Indo-Pacific marine atherinid genus Doboatherina is established based on both morphological analysis and molecular-phylogenetic results. Furthermore, four species are described as new to science, and six species are redescribed as members of the new genus. “Atherina” valenciennei, “Atherina” woodwardi, Atherinomorus duodecimalis and Atherinomorus aetholepis are included in the new genus. The former two species had been excluded from the genus Hypoatherina by Sasaki and Kimura (2014) and the latter two species showed genetically close relationship with the former two. The new genus Doboatherina, belonging to the subfamily Atherinomorinae, is defined by the following combination of characters: ascending process of premaxilla somewhat short and blunt, its height 1.5 to 3.3 times the maximum width; premaxilla gradually tapering posteriorly, posterior lateral process small or absent; posterior upper margin of dentary usually with a process; upper posterior limb of dentary with pointed or sharply angular posterior tip; anterior preopercular ridge with a deep notch just above the corner; anus situated anterior to appressed pelvic-fin tip; dorsoventral height of exposed area in midlateral scale row wide, almost equal to the maximum height of the scale, and almost the same height as scales in just above or below midlateral row. The new genus is composed of the following ten species: D. aetholepis (Kimura, Iwatsuki and Yoshino 2002)—from the Gulf of Thailand, Philippines, Malaysia, Indonesia and Papua New Guinea; D. balabacensis (Seale 1910)—restricted to Philippines (neotype designated herein); D. bleekeri (Günther 1861)—occurring in northern Vietnam, China including Taiwan, southern Korea and Japan; D. duodecimalis (Valenciennes in Cuvier and Valenciennes 1835)—widely distributed in the Indo-West Pacific, from Comoro Is., Madagascar, Seychelles, Sri Lanka, Thailand (Andaman Sea), Indonesia, Papua New Guinea, and New Caledonia; D. iwatsukii sp. nov.—occurring in Thailand (both Andaman Sea and Gulf of Thailand) and Vietnam; D. magnidentata sp. nov.—occurring in Gulf of Thailand and Vietnam; D. salangensis sp. nov.—restricted to Thailand (Andaman Sea); D. valenciennei (Bleeker 1854)—occurring in Sri Lanka, Thailand (Gulf of Thailand and Andaman Sea), Vietnam, Malaysia (Sabah), Singapore, and Indonesia; D. woodwardi (Jordan and Starks 1901)—restricted Okinawa Prefecture, Japan; and D. yoshinoi sp. nov.—from Yaeyama Is., Japan and Panay I., Philippines.
Bangana sensu lato (s.l.) has a confusing taxonomic history and has been verified as non‐monophyletic based on molecular studies. However, although taxonomic revision of Bangana is urgently required, revision is pending as samples for all included species are not currently available. In this study, partial sequences of three nuclear (exon 3 of recombination activating protein 1, early growth response protein 2B gene, and interphotoreceptor retinoid binding protein gene) and two mitochondrial genes (cytochrome b and cytochrome oxidase subunit I) from 14 species of Bangana s.l. and 24 outgroup taxa were analyzed to clarify the phylogenetic relationships of Bangana s.l. Except for Gymnostomus ariza and Incisilabeo behri, our study indicated that the remaining species presently assigned to this grouping could be divided into three major clades, with the third clade being non‐monophyletic. Based on our molecular phylogenetic results, we propose that the clade consisting of Bangana s.l. species with interrupted postlabial grooves (which excludes the clade containing the type species of Bangana) should be recognized as a new genus, which we name Decorus herein. The distinguishing morphological characters for this new genus are presented in this manuscript. The phylogeny of Bangana s.l. was reconstructed by using three nuclear (RAG1, EGR2B, and IRBP) and two mitochondrial genes (Cytb and COI). Except for Gymnostomus ariza and Incisilabeo behri, our study indicated that the remaining species presently assigned to this grouping could be divided into three major clades, with the third clade being non‐monophyletic. Based on our results, we propose that Clade B should be recognized as a new genus, which we name Decorus herein.
A key question in ecological speciation is to understand the causes and consequences of phenotypic divergence among populations. In this work, we analyzed the body shape and size variation in Jenynsia lineata across different coastal habitats along the Atlantic coast of South America. We hypothesized that J. lineata presents morphological variations to inhabit contrasting environments and that these adaptations are sex specific. We analyzed 13 populations from five coastal habitats, using linear and geometric morphometry, and tested the correlation of body shape variation with environmental variables to understand which environmental factors may influence body shape and size variation. Jenynsia lineata showed differences in body shape and size among populations, and these differences are specific to each sex. While females showed a variation in the caudal peduncle correlated with water current, we did not find such trait variation and correlation in males. Alternatively, individuals from marine rocky pools have a convex body curvature along the dorsal profile and larger body sizes, in both sexes. With these results, we describe the shape and size morphological variation of J. lineata and discuss this uncommon habitat-dependent sexual dimorphism in a Neotropical livebearer fish.
Altigena malihkaia, new species, is described from the Mali Hka River, a tributary of the Irrawaddy River in northern Myanmar. It is distinguished from all other species of the genus Altigena by having a combination of 45–49 lateral-line scales, 12–14 circumpeduncular scales, 17–20 pre-dorsal midline scales, wide head (96.8–138.5% HL), long postorbital length (64.6–81.0 % HL), and short dorsal-fin (length 21.9–26.2% SL).
The endemic lentic goby of Lake Biwa in Japan, which has hitherto been designated informally as Rhinogobius sp. BW, is formally described as Rhinogobius biwaensis sp. nov. It is distinguished from other members of the genus by the following combination of characters: vertebral count 26 (rarely 27); pectoral fin rays 18–22 (mostly 20–21); longitudinal scales 31–36 (mostly 31–34, mode 32); predorsal scales absent or few; D1 low with non-filamentous spines, all of almost same length except for shorter 1st and 6th (last) spines in both sexes; pelvic fin disk composed of thin membranes, its frenum undeveloped with a low, thin lamella; cheek unmarked; back and sides of body with 5–6 unclear dark saddles and 6–9 dark blotches; D1 lacking blotches but melanized to greater or lesser degree along rays; dorsal edge of pectoral base with one small, dark spot tinged with blue metallic luster; in breeding males, yellow on suboperculum and branchiostegal region and on basal part of anal fin, blue on medial part of under jaw.
The book contains 308 pages including 32 colour plates of 126 fish. It is believe that the academicians, students, researchers, fishery managers, administrators, policy makers and entrepreneurs should find this book as ready reference. Information on fish such as the systematic classification, synonyms and salient features are provided for 126 species. Moreover, especial notes on fish habitats, gears, annual catch, market price and monthly abundance with logical illustrations shall obviously enhance the quality of the book. The author hopes that this work shall serve as an exhaustive text book on fishery courses at the university and research institutions. Available: https://www.scribd.com/doc/303398449/Fishes-of-Noakhali
Mystus velifer, a new species of catfish from the lower reaches and estuaries of river drainages in mainland Southeast Asia is described here. It can be distinguished from congeners in having a combination of a produced, narrow snout, large eye (diameter 23.3-29.2% SL), the (anterior) cranial fontanel reaching past midway between the posterior orbital margin and the base of the supraoccipital spine, very long maxillary barbels that reach to or beyond the base of the caudal fin, head length 24.1-27.6% SL, length of dorsal spine 16.6-21.2% SL, 22-29 rakers on the first gill arch, the first dorsal-fin ray produced and reaching to the middle of the adipose-fin base, a short-based adipose fin (13.0-17.9% SL) without a deeply incised posterior margin, and depth of caudal peduncle 8.3-11.1% SL. The synonymy of M. armiger with M. wolffii is confirmed.
Abstract
The history of the systematic relationships of the mugilids is reviewed, concluding with the modern concept of Mugilidae comprising 17 genera with 80 species, one of five taxa comprising 'Smegmamorpha'. Paramugil, a new genus, is erected for P. georgii and P. parmata, and 18 diagnostic morphological and osteological differences between Paramugil and Liza and/or Mugiland/or Valamugi/ listed
South East Asia includes all of the Asian continent south-east of the Tibetan Plateau. Within this region are Burma, the Indo-Chinese and Malay peninsulas, the Philippine and Indo-Malayan archipelagos. The river systems of South-East Asia begin with the Tonkin Gulf drainages at the north-east and encompass all basins further south and continental islands of the Sunda shelf (Fig. 6.1). The region extends westward across the southern part of the continent to the Irrawaddy River of Burma. For purposes of Zoogeographic comparison, the faunas of the three areas surrounding and adjoining South East Asia will be included also. Directly west of South East Asia is the Indian subcontinent, and to the north-west is the Tibetan Plateau. North of South East Asia is Central East Asia. Comparisons with neighbouring faunas to the north and west will include all basins from the Yangtze River, the Tibetan Plateau and the Tarim basin north of Tibet, southward to Baluchistan. This chapter provides an overview of the Cyprinidae in an area where cyprinid diversity reaches its zenith. The geography and the geological history of South East Asia will be summarized first, then the faunal changes that occur from the South East Asian Zoogeographic region through to adjoining parts of Asia will be examined. Finally, interesting aspects of the biology and ecology of South East Asian cyprinids will be presented.
There are 1474 fish species now known from the Northern Territory, in 195 families, with a number of these species still undescribed. The 1474 species include 120 new records for the NT and three for Australia, while nine non-native species exist as small feral populations.
The most speciose family is the Gobiidae (gobies), with 150 recognised species, and is the main fish group inhabiting coral reef and mangrove areas. The fish fauna of the Northern Territory occupies several biogeographical regions, which include the internal river drainages of Australia and the Sahul Shelf adjoining New Guinea and Indonesia. The Northern Territory’s fish fauna most closely resembles that of north-western Western Australia, and many species are shared with this region. Among the Northern Territory’s fish fauna are 55 species considered to be threatened under various listings (ASFB, EPBC), with the poor state of knowledge of the NT’s fish populations and their true distributions hindering assessment. Many sampling gaps remain and the basic biology of most species is unknown.
Two hundred and fifteen species in 127 genera and 47 families of inland water fishes are reported from Kampuchea. For each species the following data are given: scientific name, vernacular name in Khmer, references used, distribution and comments if any. 81 species in 42 genera belong to the family Cyprinidae, for which a key is provided, and 41 species in 23 genera and 8 families belong to the order Siluriformes. Taxonomic modifications: Parachela maculicauda (Smith, 1934) and P. siamensis (Gnther, 1868) are distinct of P. oxygastroides (Bleeker, 1852); Rasbora palustris Smith, 1945 and R. kobonensis Chaudhuri, 1913 are tentatively considered as synonyms of Parluciosoma daniconius (Hamilton, 1822); Rasbora espei Meinken, 1967 is distinct of R. heteromorpha Duncker, 1904. Rasbora paucisquamis Ahl, 1935 (?) is reported for the first time since its original description. Explanations of two particular zoogeographic patterns are presented.
Two hundred and twelve fish species are recorded from the Kapuas Lakes Area (western Borneo). One hundred and forty six species are definitively recorded from within Danau Sentarum National Park (DSNP) boundaries; 43 (29 %) of them have been recorded for the first time during the present survey. Eleven species new to science have been discovered and nine additional species are either new or require further study before their identity can be cleared. Taxonomy of Chitala, Scleropages and Parachela are briefly discussed. The published data do not justify recognising more than one Southeast Asian species of Scleropages. Macrognathus tapirus is proposed as a new replacement name for Mastacembelus paucispinis Fowler, 1939. A neotype is designated for Ophidium aculeatum Bloch. A large number of fish species migrate upriver to headwaters or downriver to the Kapuas main river at some time of the year; in addition there are lateral movements between the rivers and lakes and the flooded forest during the wet season.
Balantiocheilos ambusticauda sp. nov. is described from the Mekong and Chao Phraya river drainages in Indochina (mainland Southeast Asia). It can be distinguished from its only congener, B. melanopterus, in having a shorter snout (27.5-33.9% HL vs. 33.2-39.1), posteriorly directed grooves at rictus curved (vs. straight), and narrower black margins on the pelvic and anal fins (on distal third or less vs. on distal half or more). The possibility that B. ambusticauda is extinct is also discussed.
Batasio feruminatus, new species, is described from the Ataran River drainage in Myanmar. It is distinguished from congeners in having the base of the adipose fin in contact with (vs. separate from) the base of the last dorsal-fin ray and in having a color pattern on the body consisting of both an oblique predorsal bar and a thin longitudinal black stripe. The identities of B. affinis and B. fluviatilis are also discussed; the former species is rediagnosed and B. niger is a junior subjective synonym, and B. fluviatilis is a senior subjective synonym of B. havmolleri.
The Asian bagrid catfish genus Hemibagrus is revised. Eight species groups (H. baramensis, H. guttatus, H. menoda, H. nemurus, H. olyroides, H. planiceps, H. pluriradiatus, and H. wyckii species groups) are recognised, some of which may be natural. They can be diagnosed chiefly by a combination of characters: vertebral number, length of the adipose-fin base, and colouration. The identification of Hemibagrus species is difficult mainly because of the lack of well-defined characters and considerable plasticity in measurements commonly used for diagnosing species in other catfish groups. In this study, other taxonomic characters have been investigated to determine their usefulness in differentiating the species. It was found that morphological characters associated with the adipose fin (length of adipose-fin base, dorsal to adipose distance, and shape of adipose fin), head (shape of snout and head width relative to its length), and eye (eye diameter and interorbital distance) are characters useful in species differentiation. Thirty-two valid species are recognised in this study, of which three are described as new, viz. H. divaricatus from western Peninsular Malaysia, H. lacustrinus from Danau Singkarak and its associated drainages in western Sumatra, and H. semotus from northeastern Borneo.
There are 3108 valid and named native fish species in the inland waters of
Southeast Asia between the Irrawaddy and Red River drainages, the small coastal drainages
between the Red River and Hainan, the whole Indochinese Peninsula, Andaman and Nicobar
Islands, Indonesia (excluding Papua Province, Waigeo, Aru [but Kai is included]), and the
Philippines. They belong to 137 families. Their taxonomy and nomenclature are reviewed. The
original descriptions of all 7047 recorded species-group names and 1980 genus-group names
have been checked in the original works for correct spelling, types, type locality and bibliographic references. The bibliography includes about 4700 titles. Synonymies are given, based on published information as well as unpublished observations.
The names of 49 introduced species and 347 extralimital taxa cited in the discussions have
also been checked. The original descriptions of all species not present in the covered area but
cited as type species of genera have been checked for availability, authorship, date and correct
spelling. The availability of some family-group names has been checked when there was suspicion of possible nomenclatural problems.
Bibliographic notes include new informations on the dates of publication of works by, among
others, Bleeker, Bloch, Heckel and Steindachner and discussion of authorship of names in various works.
The taxonomy and nomenclature of the fishes of the superfamily Cobitoidea (suborder Cobitoidei minus Catostomidae) are reviewed. Original descriptions of all 1499 recorded species-group names and 185 genus-group names have been checked for correct spelling, types and bibliographic references. The bibliography includes about 1010 titles. 1043 valid species in 111 valid genera are recognised. Synonymies are given, based on published information as well as unpublished observations. Endings consistent with the three possible Latin grammatical genders of genus-group names are indicated for all species-group names; basic tools are provided to establish the correct endings in most simple cases. The main nomenclatural acts are: - new family-group names: Serpenticobitidae, Barbuccidae; - new genera: Ambastaia (type species: Botia nigrolineata), Theriodes (type species: Acanthophthalmus sandakanensis), Speonectes (type species: Sundoreonectes tiomanensis); - lectotype designation: Cobitis stephanidisi (sensu Economidis, 1992); - declaration as nomen protectum: Cobitis biwae; - declaration as nomen oblitum: Cobitis schlegeli; - first reviser action on precedence of simultaneous synonyms: Parabotia kimluani over P. vancuongi, Cobitis taenia turcica over Cobitinula anatoliae, Sewellia medius over S. grandis, Parasewellia monolobata over P. polylobata, Cobitis turio over C. bilturio, Triplophysa bashanensis over T. longchiensis, Yunnanilus macrositanus over Y. forkicaudalis; - first reviser action on correct spelling of: Parabotia vancuongi, Cobitis fahireae, Hemimyzon songamensis, Sewellia analis, Parasewellia polylobata, Vanmanenia monofasciodorsalata, V. trifaseudorsala, Oreonectes microphthalmus, Paracobitis posterodorsalus, Yunnanilus macrositanus, Y. forkicaudalis, Y. spanisbripes.
A new species of Cryptocentrus is described from northern Australia. The species is distinctive in having an orbital tentacle, sensory papillae on ridged flaps on the head, transverse rows of preopercular mandibular sensory papillae, scales on the cheek, and 11+15 vertebrae. Species of Cryptocentrus normally have 10+16 vertebrae. The species occurs on silty sand substrates and is commonly trawled. Discussion on the species and species-groups in the genus Cryptocentrus is provided.
Bangana musaei, new species, is described from caves in the Xe Bangfai drainage (a tributary of the Mekong) in central Laos. It is distinguished from all other species of the genus Bangana by its whitish body and absence of eyes. Incisilabeo (type species Labeo behri) is revalidated.
Fish surveys were conducted between 1994 and 2003 in the Batang Hari drainage, Sumatra. The fish fauna of the drainage now includes a total of 297 species of which 48 are new records (45 of them new records for Sumatra). Six new species are described in the families Cyprinidae (Crossocheilus obscurus, Osteochilus kerinciensis, Pectenocypris micromysticetus), Nemacheilidae (Nemacheilus papillos) and Cobitidae (Pangio atactos, P. bitaimac). Crossocheilus pseudobagroides, Diplocheilichthys, D. jentinkii, Osteochilus scapularis, O. vittatoides, Leptobarbus rubripinna and Ras-bora hosii are revalidated. Lectotypes are designated for Labeo oblongus and Rasbora hosii. The identity of Osteochilus enneaporos, Nemacheilus longipinnis and Monotrete leiurus are discussed. A brief overview of M. leiurus suggests that M. bergii and M. ocellaris are valid species.
A new genus (Laocypris) and 64 new species of fishes are described from Laos. The new species belong to the genera Acrossocheilus (1), Crossocheilus (1), Danio (3), Garra (1), Laocypris (1), Mystacoleucus (1), Poropuntius (4), Puntius (1), Rasbora (2) (Cyprinidae), Hemimyzon (2), Homaloptera (1), Schistura (39), Sectoria (1), Vanmanenia (2) (Balitoridae), Pseudomystus (1) (Bagridae), Doryichthys (1) (Syngn ath id ae), C hauduria (1) (C hau d h u riid ae) and M onotrete (1) (Tetraodontidae). Introduction Fish surveys conducted in Laos between 1996 and 1999 have increased the number of species known in the country from some 210 recorded in the literature as at 1996 to 481 (15 of them not native to the country) recognized in a just-completed field guide (Kottelat, 2000a). Several of the species discovered during these surveys have been described elsewhere (e.g., Britz & Kottelat, 1999a, b; Chen et al., 1999; Chen & Kottelat, 2000; Fang & Kottelat, 1999,2000; Kottelat, 1998; Kottelat & Brehier, 1999; Kottelat & Ng, 1999; Larson & Vidthayanon, 2000; Ng, 1999a-b; Ng & Kottelat, 1998, 1999,2000a-c). The field guide is due to be published in the second quarter of 2000 (a time-frame beyond my control) and clearly, it is desirable that the large number of species still unnamed should be named and identified in this work. It would be counterproductive to omit them from the fieldguide or to list them without valid names. The purpose of the present paper is to make names formally available for them.
A re-examination of the holotype of Gobius gastrospilos
Bleeker, 1853 confirmed that this species belongs to the genus
Pseudogobius Popta, 1922. The detailed redescription of
Pseudogobius gastrospilos (Bleeker, 1853) would be provided
in this paper. Furthermore, a series of field surveys of the
gobioid fauna in brackish habitats of Taiwan revealed and
summarized the following four newly recorded gobiid species:
Pseudogobius gastrospilos (Bleeker, 1853), Mugilogobius
chulae (Smith, 1932), Mugilogobius mertoni (Weber, 1911)
and Mugilogobius myxodermus (Herre, 1935). The diagnosis
of these newly recorded species of Taiwan would be also
provided herein.
The sucker was studied in young and mature fish by light microscopy, histochemistry, transmission and scanning electron microscopy, X-ray probe microanalysis, dissection, staining preparations of whole skeletons, and watching the animals in aquaria. The fleshy lips are supported by highly flexible, chondroid tissues, the structure and histochemistry of which differ substantially from those of cartilage. They allow the sucker to evert when the fish attaches to a stone or aquarium wall and are connected to the maxillae, premaxillae and dentaries. Lining the inside of the lips are two horny rasps, each with several regular rows of small hooks. The scraping blades of these hooks are keratinized and point towards the mouth. They increase the coefficient of friction for adhesion and enable the fish to feed on encrusting algae. Between the posterior rasp and the -anterior margin of the mandible are two invaginations of the lower lip that extend the sucker chamber beneath large hollows in the dentaries. The anterior margin itself contacts the outer surface of the maxillary oral valve when the mouth is closed, and isolates the sucker chamber from the rest of the buccal and pharyngeal cavities. Contrary to previous views, it is thought that a true vacuum is produced, and that attached fish spend long periods without taking water in through the mouth. The attachments of the principal jaw muscles are described and their role in sucker action discussed. There are similarities with the jaw mechanism of catostomids.
A checklist of Recent and fossil catfishes (Order Siluriformes) is presented, summarizing taxonomic literature published through 2005. From 4624 nominal species group names and 810 genus group names, 3093 species are recognized as valid, and are distributed among 478 genera and 36 families. Distributional summaries are provided for each species, and nomenclatural synonymies, including relevant information on all name-bearing types, are included for all taxa. One new name is proposed herein: Clariallabes teugelsi, as a replacement for Clarias (Allabenchelys) dumerili longibarbis David & Poll, 1937, which is preoccupied by Clarias longibarbis Worthington, 1933, but has been treated as a valid species of Clariallabes by Teugels. Acrochordonichthys melanogaster Bleeker, 1854, is designated as type species of Acrochordonichthys Bleeker, 1857, inasmuch as no earlier valid designation has been found. A new genus Pseudobagarius, is proposed for the "pseudobagarius group" of species formerly placed in Akysis. The status of 228 species group names remains unresolved and 31 names based on otoliths ascribed to catfishes are listed but not placed into the checklist. The current emphasis given to catfish taxonomy at present is likely to result in a dramatic increase in the total number of valid taxa as well as major changes in the membership of some of the higher level taxa recognized here.
The Southern Asian Airsac Catfish, Heteropneustes fossilis (Siluriformes: Heteropneustidae), is widely distributed from Pakistan, the Indian subcontinent, Sri Lanka through Indo-China including Malay Peninsula. Although its wide distribution and importance as a food fish, morphological comparisons between local populations including examination of type specimens of related nominal species presently treated as junior synonyms of the species for testing real taxonomic diversity of the species has never been done so far. Morphological comparisons between local populations within its distribution range, totally 645 specimens from 14 river basins including the Indus, Ganges, Ganges–Brahmaputra delta, Brahmaputra, Kerala state, Cauvery, Sri Lanka, Upper Irrawaddy, Lower Irrawaddy, Sittoung, Salween, Chao Phraya, Eastern and Tapi river basin has been conducted. The result of discriminant analysis from 7 meristic characters indicated that the examined local populations can be separated into two major groups. The former and later group can be characterized by 61-78 (mean 69) vs.73-86 (mean 79) anal fin rays, 42 - 47 (mean 45) vs. 45-51(mean 48) caudal vertebraes , caudal peduncle depth 5.0-7.3 (mean 5.8) vs. 3.3-5.8 (mean 4.5) % standard length (SL) and pectoral spine length 6.9-10.9 (mean 9.3) vs. 9.8- 13.4 (mean 12.7) % SL, respectively. The student t-test from 11 meristic characters between the two groups showed that 8 of them were significant (p<0.001). The analysis of covariance (ANCOVA) from 36 morphometric characters indicated that 31 of them were significantly different between the two groups (p<0.001). The former group distributed from the Indus River basin in Pakistan, Ganges, Brahmaputra, Cauvery Rivers and Kerala state of the Indian subcontinent, Sri Lanka and the Upper Irrawaddy River basin in China and Myanmar whereas the later group distributed from the Upper to Lower Irrawaddy, Sittoung, Salween River basins in Myanmar, the Chao Phraya, Eastern and Tapi River basins in Thailand. The two groups are sympatrically distributed in the Upper Irrawaddy River basin. The comparison with the original descriptions and the type specimens of all nominal species of the congeners indicated that the first group is H. fossilis (Bloch,1794) and the second group is H. kemratensis (Fowler,1937).
The air sac catfish, Heteropneustes fossilis (Siluriformes: Heteropneustidae), is widely distributed in freshwaters of the Indian subcontinent and mainland southeast Asia. No comprehensive molecular studies that cover the broad distributional areas have been carried out to date. Here, we conducted molecular phylogenetic analyses using both mitochondrial and nuclear gene sequences to suggest that the Heteropneustes fossilis species complex consists of three clades that may potentially be separate species with distinct geographical distribution (southeast Asia, northeastern India, and southwestern India). The first and second clades are more closely related to each other than they are to the third clade. Within the first clade there is a basal divergence of a subclade consisting of individuals from Upper Irrawaddy River basin of Myanmar, which share some morphological traits with members of the Indian clades. Our molecular and morphological data are congruent with hypotheses that the Early-Middle Miocene disconnection between the paleo-Tsangpo River and the Irrawaddy River caused the vicariant divergence between southeast Asian and northeastern Indian clades, and that the southeast Asian Heteropneustes originated from the Upper Irrawaddy.
The gobiid subfamily Oxudercinae was revised to assess the monophyletic nature of the subfamily; the intergeneric relationships within the subfamily; the relationships of oxudercines to other gobiid genera; the recognisable species and their distinguishing characters; and the distribution patterns of the subfamily and component taxa. The following results were obtained: (1) The Oxudercinae can be defined on the basis of derived states of certain neurocranial bones and muscles, eye position, nasal flap morphology, the palatine-ectopterygoid arrangement, reduction in size of the premaxillae ascending processes, and in having a single anal fin pterygiophore anterior to the first hemal spine. (2) Within the subfamily, one undefined and nine monophyletic terminal assemblages are recognised, with relationships amongst them based on derived states of various morphological features. These assemblages are recognised at the generic level and one new genus (Zappa) is described; a key to the genera is provided. Thirty four species are recognised of which one (Boleophthalmus birdsongi) is described for the first time. Each species is described in detail and a key is provided for each genus. (3) Two monophyletic assemblages (one comprising three genera, the other seven) are recognised at the tribal level. Defining characters for each tribe are provided and illustrated. (4) Biogeographic analysis indicated that nine of the ten genera are distributed in an area bounded by the Arabian Gulf to the west, southern Japan to the north, northern Australia to the south, and Papua New Guinea to the east. The remaining genus, Periophthalmus, overlaps and exceeds the above limits, ranging from west Africa eastward to Samoa. Species-specific correlations linking Periophthalmus with mangrove distributions are discussed.
Recent fieldwork has revealed the presence of six species of Schistura McClelland 1838 in the Mae Khlong basin in south-western Thailand. These include S. sexcauda (Fowler 1937), S. balteata (Rendahl 1948), S. mahnerti Kottelat 1990, the recently described S. aurantiaca Plongsesthee et al. 2011 and S. tenebrosa Kangrang et al. 2012, and a newly discovered species described herein. Schistura sexcauda previously was the only Schistura species known in the Mae Khlong, and it was mis-identified as S. desmotes (Fowler 1934). Schistura pantherina, n. sp., is easily distinguished from all other species of Schistura by its distinctive color pattern. It appears to be endemic to the Mae Nam Kwai Noi system.
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