The Chao Phraya is the major river in Thailand, with its low alluvial plain forming the centre of the country. It flows through Bangkok and then into the Gulf of Thailand.
The Mekong giant catfish, is a large, critically endangered species of catfish in the shark catfish family (Pangasiidae), native to the Mekong basin in Southeast Asia and adjacent China. It is considered critically endangered due to accelerating habitat loss.
Clarias is a genus of catfishes of the family Clariidae, the airbreathing catfishes. The name is derived from the Greek chlaros, which means lively, in reference to the ability of the fish to live for a long time out of water.
The redtail catfish, Phractocephalus hemioliopterus, is a pimelodid (long-whiskered) catfish. In Venezuela, it is known as cajaro, and in Brazil, it is known as pirarara, stemming from the Tupi language words pirá and arara. It is the only extant species of the genus Phractocephalus. This fish is common in the aquarium trade, although its massive adult size makes it unsuitable for all but the largest aquariums. They feed on fish, crustaceans and fallen fruits. They are not evaluated by IUCN.
Wallago is a genus of catfishes order Siluriformes of the family Siluridae, or sheatfish. They are found in rivers throughout southern and southeastern Asia. The only extant species of this genus is Wallago attu.
Wallago attu is a freshwater catfish of the family Siluridae, native to South and Southeast Asia. It is commonly known as helicopter catfish or wallago catfish. Some regional designations, such as the Manipuri Sareng, the Bengal Boal, the Sylheti Gual or the Malaysian and Indonesian Tapah are also occasionally used in English. W. attu is found in large rivers and lakes in two geographically disconnected regions, with one population living over much of the Indian Subcontinent and the other in parts of Southeast Asia. The species can reach a total length of 1 m.
Siluridae is the nominate family of catfishes in the order Siluriformes. About 105 living species of silurids are placed in 12 or 14 genera.
Akysis is the largest genus of catfishes of the family Akysidae.
Kryptopterus cryptopterus is a species of catfish, the type species of the genus Kryptopterus. It can be distinguished from all its congeners, with the exception of the newly split Kryptopterus geminus, by the almost flat dorsal profile with no concavity behind the head. This species grows to a length of 14.6 centimetres (5.7 in) SL.
Leiocassis is a genus of bagrid catfishes found mostly in Southeast Asia with some species occurring in China.
Chiloglanis is a genus of upside-down catfishes native to Africa. These species have modified lips and barbels that form a suckermouth. They also have a naked (scaleless) body. Sexual dimorphism has been reported in Chiloglanis. The adult males of many of these species have elongate anal and caudal fins. Also, males may have an enlarged humeral process.
Schilbe is a genus of schilbid catfishes native to Africa. Some are colloquially called "butter catfishes", though this may also refer to the Asian genus Ompok of the family Siluridae.
Belodontichthys is a genus of sheatfishes native to Asia.
Chiloglanis micropogon is a species of upside-down catfish native to Cameroon, the Democratic Republic of the Congo and Angola, where it occurs in the lower Congo river, the Kasai, Kwango, Dja and Lualaba rivers and Wagenia Falls. It also occurs in the Rungumba River, a tributary of Lake Tanganyika in the Democratic Republic of the Congo. This species grows to a length of 4.9 centimetres (1.9 in) TL.
Wallagonia maculatus is a species of catfish in the family Siluridae endemic to Malaysia, where it is known only from Sabah in northern Borneo. This species grows up to a length of 100 centimetres (39 in) SL.
Phalacronotus bleekeri, commonly known as Bleeker's sheatfish, is a species of catfish of the genus Phalacronotus. This species grows to a length of 60 centimetres (24 in) SL.
Wallagonia leerii, also known as the striped wallago catfish, helicopter catfish, or Tapah is a species of catfish native to Southeast Asia. Its habitat ranges from the river drainages of Thailand through the Malayan peninsula to the islands of Sumatra and Borneo in Indonesia. It can grow up to 2 m in length and weigh up to 150 kg (330 lb). It has been used as food in Southeast Asia since ancient times. Overfishing for its prized meat has cause population to significantly decrease. Furthermore, the breeding migration pattern of this fish is especially vulnerable to damming which has decreased the wild population significantly.
Wallagonia is a recently established genus of Silurid catfishes, containing 3 distinct species, all of whom are native to Southeast Asia:
Mystus bocourti is a species of catfish endemic to Cambodia, Laos, Thailand and Vietnam, known only from Chao Phraya River and Mekong River. It was formerly listed as Heterobagrus bocourti until the genus Heterobagrus became Mystus. It is demersal and potamodromus and occurs in medium to large rivers. The fish considered rare and declining throughout its range and is threatened by pollution, present and future dams and water extraction for agriculture and human settlements. Considering this and no present conservation measures, the fish is listed as Vulnerable.
Hemiarius verrucosus, the shovelnose sea catfish, is a species of catfish in the family Ariidae. It was described by Heok Hee Ng in 2003, originally under the genus Arius. It inhabits rivers and estuaries in Laos and Thailand, including the Mekong, Bang Pakong and Chao Phraya Rivers. It reaches a maximum total length of 80 cm (31 in). Its diet includes finfish and shellfish.
