I have a large (300G) mixed tank with mild mannered mbuna and Auloncara, not much aggression. I love the color and size of demasoni, but worry they may stress the others, especially the peacocks? Any good alternatives? Female Kenyi (give back the ones that turn yellow)? I would think the females are not nearly as aggressive as the males? Pseudotropheus Minitus? Though the females look very drab to me. Ideally a species that will max out at 2.5 to 3 inches.