I have a 4' 60gal that I overstocked with all male peacocks and couple misc. fish- about 12 fish in all. I introduced them all at the same time to the tank and it's been a great success/ very limited aggression. I'd like to do something similar with my 200g 7x2x2. This time I'd like a Mbuna tank. What is a good overstock number to shoot for to keep the aggression down? Also, has anyone had any success in keeping any Lake Victoria cichlids with Mbuna in larger tanks?