My fish are the same and I've posted some pics also. Whether or not we can get a positive identification, in my experience they are laid back and will not be a problem with other mbunas. I have a 55 gal with 3 of the yellows, 2 fuelleborns, 2 red zebras, 1 juvenile kenyi, 1 yellowfin borley, 1 electric blue hap, and 1 OB peacock. All of these fish get along fine but I have tried pure peacocks, the OB is a hybrid, and they were killed. There is also a syndontis cat and rubberlip pleco with them.