Clarias maclareni is a critically endangered species of catfish in the Clariidae family. It is endemic to Lake Barombi Mbo in western Cameroon. It is 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 mainly feed on insects.