Oreoglanis | |
---|---|
Oreoglanis hponkanensis | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Siluriformes |
Family: | Sisoridae |
Tribe: | Glyptosternina |
Genus: | Oreoglanis H. M. Smith, 1933 |
Type species | |
Oreoglanis siamensis H. M. Smith, 1933 |
Oreoglanis is a genus of fish in the family Sisoridae native to Asia. These fish live in fast-flowing streams in China, mainland Southeast Asia and the Indian subcontinent. [1] They are mainly distributed in the Mekong, upper Salween and Irrawaddy River drainages. [2] They range from the Brahmaputra basin to the Lam River drainage in central Vietnam. [3] They are easily distinguished from other catfishes by their strongly depressed head and body and greatly enlarged paired fins that have been modified to form an adhesive apparatus. [1] The flattened shape of these fish and the large pectoral and pelvic fins provide essential adhesion in the fast-flowing waters they live in.
The taxonomy of this group is currently under discussion and changes seem inevitable as the group is suspected to be non-monophyletic. [1] Based on morphology, Oreoglanis has been divided into two species groups. According to the original description of these groups, the O. siamensis species group is distinguished by having an emarginate caudal fin, and a lower lip notched medially with an entire or weakly laciniate posterior margin, while the O. delacouri species group is distinguished by having a lunate caudal fin and a lower lip without a median notch with prominent extensions along the posterior margin. [1] It has been suggested that only the marginal morphology of lower lip can be employed to recognize the two species groups. [2]
There are currently 24 recognized species in this genus:
Sisoridae is a family of catfishes. These Asian catfishes live in fast-moving waters and often have adaptations that allow them to adhere to objects in their habitats. The family includes about 235 species.
Erethistidae are a family of catfishes that originate from southern Asia. It includes about 45 species.
Pseudolaguvia is a genus of South Asian river catfishes. These species inhabit hill streams and large rivers. P. tenebricosa is found in fast running, clear water; the river has a sandy bottom and numerous rocks and boulders and aquatic vegetation is absent. P. inornata is from clear, shallow, moderately flowing streams with a predominantly sandy bottom. P. muricata is found in clear, shallow, slow-flowing streams with a mixed substrate of sand and detritus; these fish are found amongst detritus in areas with current. P. ferula is also found in swift flowing waters with a mixed rocky/sandy bottom.
Oreoglanis macronemus is a species of sisorid catfish. It is known only from four preserved specimens collected from the Xiangkhoang Plateau, northern Laos, by an expedition led by Jean Théodore Delacour in the mid-1920s and misidentified as Euchiloglanis sp. These specimens are in the Natural History Museum, London.
Glyptothorax is a genus of catfishes order Siluriformes of the family Sisoridae. It is the most species-rich and widely distributed genus in the family with new species being discovered on a regular basis. These species are distributed in the Black Sea basin, northern Turkey, south and east to the Yangtze River drainage in China and south throughout Indo-China to Java, Indonesia. They are found in Asia Minor and southwards to Southeast Asia. The genus is very diverse in the Indian subcontinent. Southeast Asian species tend to have restricted distributions.
Akysis is the largest genus of catfishes of the family Akysidae.
Erethistoides is a genus of South Asian river catfishes.
Pseudecheneis is a genus of sisorid catfishes native to Asia.
Amblyceps is a genus of fish in the family Amblycipitidae. The genera Amblyceps and Liobagrus are sister group pair that is, in turn, sister to Xiurenbagrus. These species are easily distinguished by the presence of pinnate processes along with the median caudal-fin rays, a prominent cup-like skin flap above the base of the pectoral spine, and the adipose fin largely separate from the caudal fin. In most species the caudal fin is deeply forked; A. apangi and A. murraystuarti differ in having their caudal fin truncate. Amblyceps species may reach about 100 millimetres (3.94 in) SL.
Bagarius is an Asian genus of catfishes of the family Sisoridae. It includes five to six extant species and potentially one extinct fossil species, B. gigas.
Exostoma is a genus of sisorid catfishes native to Asia. These species are distributed in the Brahmaputra drainage of north-eastern India, and east and south to the Salween drainages in Burma. E. berdmorei is found in the Sittang and Salween drainages in Burma. E. labiatum is known from the Brahmaputra drainage in north-eastern India, but has also been recorded in the Salween drainage in Burma, the Ayeyarwady drainage in China, and the Brahmaputra drainage in Tibet and Burma. E. stuarti is from the Ayeyarwady River of Burma and India; however, it has not been collected since its original discovery. E. labiatum is found in mountain rapids.
Pseudexostoma is a genus of fish in the family Sisoridae endemic to China. These species are restricted to the upper Salween and one upper branch of the Irrawaddy in China. P. brachysoma is known only from the middle and lower Nujiang River. P. yunnanensis is only known from the upper Dayinjiang. These rivers were once connected, but are now separated. Also, the environment and temperature of the Nujiang River became greatly different between the northern and southern areas, leading to speciation.
Pareuchiloglanis is a genus of sisorid catfishes native to Asia. These species are rheophilic catfish chiefly found in the headwaters of major rivers in South and East Asia. They originate from the Brahmaputra drainage in India, east and south to the Yangtze drainage in China and the Annamese Cordillera drainages in southern Vietnam. Two species are known from the Mekong River: P. myzostoma and P. gracilicaudata. Four species are known from the drainage of China: P. abbreviatus, P. gracilicaudata, P. myzostoma and P. prolixdorsalis.
Oreoglanis siamensis, the Siamese bat catfish, is a species of sisorid catfish in the Sisoridae endemic to Thailand where it is found in the Chao Phraya and Mekong River basins. This species grows to a length of 14.0 centimetres (5.5 in) SL. It lives only in streams of 1,200 meters above sea level.
Chimarrichthys kishinouyei is a species of sisorid catfish native to Asia.
Creteuchiloglanis is a genus of sisorid catfishes native to Asia.
Exostoma effrenum is a species of sisorid catfish in the family Sisoridae. It is found in Thailand.
Exostoma peregrinator is a species of sisorid catfish in the family Sisoridae. It is found in Thailand.
Exostoma barakense is a species of sisorid catfish in the family Sisoridae. It is found in India.
Oreoglanis omkoiense is a fish that is in the genus Oreoglanis which can be found in the rivers of Thailand.