I kept Blue Acaras and 2 Zebras, before. The Zebras acted very cichlid like, dug and defended and the Blue Acaras successfully bred a couple of times. There were 2 Firemouths, a plec, 3-4 cories, various tetras, none over 4" (except the plec) in a 55gal. I there were two other africans in there also, looked psuedo like, I want to say yellow labs but I don't think so. The Zebra did kill one off my Bleedign heart tetras.