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.
Clarias nigricans is a species of clariid catfish. It is only known from the Mahakam River in eastern Borneo. The eel-like catfish of this region were long assumed to belong to the widespread species Clarias nieuhofii but examination of 6 specimens purchased from a fish market in Samarinda in 1999 and preserved specimens from the same location revealed consistent and distinctive differences indicating a separate species.
Clarias batu is a species of clariid catfish. It is only known from Tioman Island off the eastern coast of Peninsular Malaysia. The eel-like catfish found on this island were originally identified as the widespread species Clarias nieuhofii but comparison of a large series of specimens from Tioman with a series of C. nieuhofii from the mainland revealed consistent and distinctive differences indicating a separate species.
Clarias maclareni is a critically endangered species of catfish in the family Clariidae. It is endemic to Lake Barombi Mbo in western Cameroon. It is currently threatened because of pollution and sedimentation due to human activities, and potentially also by large emissions of carbon dioxide (CO2) from the lake's bottom (compare Lake Nyos). It is known to grow to 36 centimetres (14 in) TL. Large individuals feed mainly on other fishes (especially cichlids), while smaller individuals mainly feed on insects.
Werner's catfish is a species of airbreathing catfish. It is found in Burundi and Tanzania. Its natural habitats are rivers and freshwater lakes. It is threatened by habitat loss. This species reaches a length of 23.0 cm SL.
Synodontis polli, known as Poll's synodontis, is a species of upside-down catfish endemic to the Democratic Republic of the Congo, Burundi, Zambia, and Tanzania, where it is only known from Lake Tanganyika. It was first described by Belgian ichthyologist Jean-Pierre Gosse in 1982, from specimens collected at multiple points along the shore of Lake Tanganyika.
Pareiorhina rudolphi is a species of armored catfish endemic to Brazil where it occurs in the Paraíba do Sul River near Lorena, São Paulo State, Brazil. This species grows to a length of 4.5 centimetres (1.8 in) TL.
Malapterurus teugelsi is a species of electric catfish endemic to Guinea where it occurs in the Kogon River. This species grows to a length of 21.2 centimetres (8.3 in) SL.
Atopochilus mandevillei is a species of upside-down catfish endemic to the Democratic Republic of the Congo where it occurs in the Kinsuka Rapids. This species grows to a length of 14.1 centimetres (5.6 in) TL.
Microsynodontis polli is a species of upside-down catfish native to Guinea from the Gbin River and Liberia from Saint John. This species grows to a length of 4.1 centimetres (1.6 in) TL.
Synodontis clarias, known as the red tailed synodontis, or the mandi, is a species of upside-down catfish that occurs widely in the waters of northern Africa. It was first described by Swedish zoologist Carl Linnaeus in 1758 as Silurus clarias. The original specimens were obtained in Egypt, near Cairo. The meaning of the species name clarias is not certain, but may possibly have been used to mean "bright" or "clear".
The Pemecou sea catfish, also known as the flapnose sea catfish, the mud cuirass, or the gillbacker, is a species of catfish in the family Ariidae. It was described by Marcus Elieser Bloch in 1794, originally under the genus Silurus. It inhabits marine, brackish and freshwaters in Brazil, Guyana, French Guiana, Colombia, Suriname, Venezuela, and Trinidad and Tobago. It dwells at a depth range of 1 to 5 m. It reaches a maximum total length of 94.2 cm (37.1 in), while males more commonly reach a TL of 30 cm (12 in) and females reach a TL of 62.5 cm (24.6 in). It reaches a maximum weight of 1.5 kg (3.3 lb).
The flapnose sea catfish, also known as the brown sea catfish, is a species of catfish in the family Ariidae. It was described by Theodore Gill in 1863, originally under the genus Leptarius. It inhabits rivers and estuaries in Ecuador, Colombia, Guatemala, Costa Rica, El Salvador, Panama, Honduras, Nicaragua, Mexico, and Peru. It dwells at a depth range of 0 to 15 m. It reaches a maximum total length of 90 cm (35 in), more commonly reaching a TL of 50 cm (20 in).
Pseudolaguvia ribeiroi, the painted catfish, is a species of catfish from Nepal and India. This species reaches a length of 10 cm (4 in).
Clarias kapuasensis is a species of clariid catfish from Borneo. It has been described from the upper part of the River Kapuas
Clarias peudoleiacanthus is a species of clariid catfish from Borneo. It has been described from the southern lower parts of the River Kapuas (Western Kalimantan and coastal areas near the Barito River in southern Kalimantan, Indonesia
Clarias pseudonieuhofii is a species of clariid catfish from Borneo. It has been currently described from the upper basin of the Kapuas River in West Kalimantan, in a geographic area bordering Sentarum Lake. It has been differed from C. nieuhofii by comparing the holotypes and paratypes from specimens of C. nieuhofii from Sumatra.
Clarias anfractus is a species of clariid catfish from Borneo. It is known from the Segama and Kalabakan drainages in Sabah, Northeastern Borneo.
Clarias planiceps is a species of clariid catfish from Borneo. It is known from tributaries all over Sarawak, and possibly up to Kapuas Hulu Regency.
Clarias insolitus is a catfish within the genus Clarias, found in the upper drainage of the Barito River, in Kalimantan, Indonesian Borneo.
