I have a 60 with a blue ram (female, I think) pair of Bolivian rams, a trio of A. MacMasteri, and a male A. Agassizii. They are in with some angels, diamond tetras, black phantom tetras, Von Rio tetras, a snowball pleco, and a blue-eye lemon bristlenose pleco. The Agassizii is the most dominant now of the dwarf cichlids, but doesn’t really run any other fish. (I had a male blue ram who was the boss, but I think he jumped.). The angels and the dwarf cichlids ignore each other. The biggest issue I have is getting food past the tetras for the apistos- they never come to the top and the diamond tetras especially are pigs.