Reganochromis calliurus is a species of cichlid endemic to Lake Tanganyika in East Africa where it can be found in deeper coastal waters over sandy substrates at depths of around 60 metres (200 ft). Its preferred diet consists mostly of shrimp. It can reach a length of 15 centimetres (5.9 in) TL. This fish can also be found in the aquarium trade. It is currently the only known member of its genus.