I really want to buy a new cichlid prefribly o e that doesn't get bigger than 5 inces and one that's not to aggresive I currently have Bolivian rams. Cribensis. African butterflys. Clown loaches and simensis catfish so I'm lookin for a realll colouful fish to brighten up the tank abit. Any sugestions please I like the fire mouths but don't they get a bit big?