noun Any of many fish that frequent muddy water or burrow in mud, of numerous species, including: All species of Neochanna Clarias spp., including Clarias anguillaris, Clarias gariepinus, Clarias agboyiensis, Clarias leviceps Channa striata (striped snakehead) Heterobranchus didorsalis (African catfish) Clarotes laticeps (widehead catfish) Protopterus annectens (West African lungfish) Chrysichthys nigrodigitatus (bagrid catfish)