Nice pics... I have about 30ish Mbuna in a 125 myself. Had to put the ish, cause there are fry in there as well so I don't know an accurate count. lol...
Pattycakes - your fish look good except for their obesity problems. I'd get them on a diet, just like with people, they can suffer health problems in the longrun. That and they don't look quite as nice with bulging bellies...