Wikipedia
Callochromis
Callochromis is a genus of cichlids native to shallow, sandy bottom areas of Lake Tanganyika in East Africa. As sandsifters, all species eat sand-dwelling invertebrates. Unlike many other sandsifters, Callochromis species are somewhat aggressive, especially when breeding. C. pleurospilus has become popular with fishkeeping hobbyists because of their compact size, iridescent colors, and hardiness.