Well it depends on what you want them for. If you want breeders then keep the 7 bars (Kigoma). The 6 bars (Burundi) have mooning. Mooning is the white pitting at the top of their bars. Ideally you want to avoid that in breeders since its a flaw. If you just want them as pets though theyre fine and healthy looking. Just watch out for the Mbuna and other agressives. Fronts ARE NOT agressive. At all.