Bagarius

Bagarius (Thai: ปลาแค้) is an Asian genus of catfishes (order Siluriformes) of the family Sisoridae. It includes seven extant species and potentially one extinct fossil species, B. gigas.

There are currently seven extant species placed in Bagarius:

A 2021 study found the giant devil catfish (Bagarius yarrelli) to be synonymous with B. bagarius.

Bagarius lica may be synonymous with Bagarius vegrandis.

One potential fossil species, †Bagarius gigas, is known from the Eocene of Sumatra.

Bagarius species inhabit south and southeast Asia. They are distributed in the Indus drainage in Pakistan and India, east (including peninsular India) to the Red River drainage in Vietnam and south throughout Indochina including the Malay Peninsula and Indonesia. B. bagarius is known from the Ganges River, Chao Phraya, and the Mekong drainages, as well as the Malay Peninsula and the Salween and Mae Klong drainages and the Brahmaputra River and Ayeyarwady River. B. suchus originates from the Mekong and Chao Phraya basins. B. rutilus inhabits the Red River and Ma River in northern Vietnam.

B. gigas is reportedly from the Eocene of Sumatra, but the age of the locale has been questioned.

The oldest known confirmed sisorid fossil is B. bagarius found in Sumatra and India of the Pliocene.