I just put three new juvenile fish in my tank so now i have a venustus, golden mbuna, peacock cichlid, and electric yellow cichlid in a 30 gallon setup. They seem to get along perfect. I dont see a dominant fish they just each picked a territory and chase eachother away from their choice spots. The electric yellow seems to shake and rub against rocks but i noticed it does this in the territory it chose. can this mean ick or just a territorial display??