Bagarius (Thai: ปลาแค้) is an Asian genus of catfishes (order Siluriformes) of the family Sisoridae.

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

The head and body is entirely or almost entirely covered by heavily keratinized skin superficially differentiated into unculiferous plaques or tubercles.

Bagarius species lack a thoracic adhesive apparatus and paired fins are unplaited.

[5] Bagarius species have the same general colour pattern consisting of three darkly pigmented bands or blotches on the body.

[9] B. yarelli occurs in large rivers on the bottom, even with swift current, never entering small streams.

Apparently the main upstream migration begins close to the peak of flood, when the current is very strong and the water is turbid.

[11] Bagarius species are marketed fresh, and are important as a food fish, but the meat spoils rapidly and can cause illness.

[9][10][11] The Goonch catfish B. yarrelli has become an object of media attention as reports have surfaced of some of these fish feeding on funeral pyres in the Kali River.

[12] There is speculation that some drownings have also been caused by large specimens that have "developed a taste" for human flesh from the corpses and subsequently have attacked bathers in the river.