What is "lionhead cichlid"

n. a cichlid rheophile freshwater fish from Africa.

The lionhead cichlid (Steatocranus casuarius), also known as African blockhead, buffalohead, humphead cichlid, lionhead or lumphead is a species of rheophilic cichlid native to Pool Malebo and the Congo River. It uses caves for spawning. This species can reach a length of TL. This species can also be found in the aquarium trade.