Research your fish to learn the difference. Peacocks and mbuna are Malawi fish, front's and Julie's (Julidiochromis spp) are Tanganykian. Tanganykian fish come from higher pH and hardness than Malawi fish. Front's get relatively huge, need to be kept in large groups in really large tanks, and aren't compatible with peacocks or mbuna.
The orange fish in the first pic are most likely red zebras, the yellow w/black edged fins are electric yellow Labidchromis, the albinos are most likely zebras too, and there are a few others I'm not sure on species but they're also mbuna.
The silver fish with the sloped heads and the odd ones with irregular brown spots are Malawi fish but not mbuna, and it looks like a couple blue peacocks in there as well.
The yellow Lab's are the most relatively peaceful of the lot, zebras are generally holy terrors. They're all commercially bred/raised in FL fish farms. What size tank are you stocking?