How many Mbuna could I put in my 55gallon? I've got a Fluval 404,penguin 350, and aquaclear 110 on the tank...... right now ive got 10 in there showing no aggression even with 3 of them breeding. Usually all they do is chase one another around for a second or two then go back to normal,never any biting or lip locking. biggest one is 2yrs old at 4"s... albino zebras, red zebras, yellow lab and blue johanii are my current cichlids