Threadfin cichlid

The threadfin cichlid (Petrochromis trewavasae) is a species of cichlid endemic to Lake Tanganyika found in areas with rocky substrates on which it can graze on algae. This species can reach a length of 18 cm. It can be found in the aquarium trade. The specific name of this cichlid honours the British ichthyologist Ethelwynn Trewavas (1900-1993).