I really was hoping the catfish would help pick up the scraps left from the cichlids since theyre such messy eaters. The substrate is sand. Ok so ill either go Oscar, GT, Delhezi, Spotted Raph, Striped Raph ---- or GT JD, Delhezi, Spotted Raph, Striped Raph??? -- Also referring to aweshade9, if I go oscar I will let my GT get a minimum of 4inches big before I introduce the smallest Oscar i can find, give him a head start ya know?