well my mom bought them when the guy at the LFS told her she could get 2 small ones in a 10 gallon. I told her they would get much too big and since my "JD" ( ill explain later) hanst been aggressive i tried to put them in my 55 when my festivum proceeded to rip their fins to shreds. THey are in teh 10 and i Found out my JD is a rainbow cichlid which should be compatible with angels. Unfortunately my festivum hates new fish. I think i am gonna try to Get them in by switching some fish around so they tolerate each other.