...or you could go with smaller groups of various species (each from a different genus) in groups of 1m/3f each (4 red zebras, 4 snow white socolofi, 4 yellow labs, 4 afra's, 4 rusties).
Many options. What other mbuna species are you interested in?
My LFS has recently got hold of half a dozen Pseudotropheus demasoni.We dont see a lot of them around here. How would they do with Zebras and sw socolofis? Anything I need to keep in mind with Demasonis?