Cunningtonia longiventralis is a species of cichlid endemic to Lake Tanganyika in East Africa where it is found near rocky shores. It eats floating plankton. This species reaches a length of 14 centimetres (5.5 in) TL. It can also be found in the aquarium trade. As of 2011[update] it is the only known member of its genus.[2] The generic name honours the British zoologist and anthropologist William Alfred Cunnington (1877-1958), the leader of the expedition to Lake Tanganyika during which type was collected.[3]