Yeah i have two texas (one 5 inch one 3 inch), five convicts, a jag a red devil a black shark a blue eyed cichlid and an aussie native fish in my tank in my room. Anyway in the last few days the smaller texas which i think is female has gone fully black apart from an area just around its head. Yeah whats this mean. is it horny or is it just showing some sign of aggression?