Liobagrus obesus, the bull-head torrent catfish, is an endangered species of catfish in the family Amblycipitidae (the torrent catfishes) endemic to South Korea, where it occurs in the middle parts of the Geum, Mangyeong, and Yeongsan rivers.

[1][2] This species reaches a length of 10 centimetres (3.9 in) TL.

[3] L. obesus inhabits gravel and rock bottoms in areas with slow water velocity.

[2] Anthropogenic activities, such as river development and water pollution, have caused a rapid decline in L. obesus populations.

[2] "Liobagrus obesus Son, Kim & Choo, 1987".