I had one about 4.5" long and it was the peace keeper in the tank long story short a lombardi killed it, that problems fixed.(Lombardi Gone) So I decided to get another one about 2.5" long but this ones agro. "Cyrtocara moorii is a beautiful, mild-tempered fish that is a delight to keep." Well mine wonâ€™t stop biting every fish in my tank. Has anyone else had an over aggressive moorii.