I have a 75 gallon tank that I am making a mostly melanochromis tank. Right now I have 5 M. auratus, 4 Kenyi, and one spotted raphael. I am looking to add some more wish and wonering what I should add. Maybe M. Johanni? More auratus? More Kenyi? The auratus mixture is 2 males and 3 probable females. I thought I had 4 females but one of them changed on me. The kenyi mixture is one confirmed male and one more possible male with 2 females. Suggestions are appreciated!