I have two of these guys and although they are beautiful, one of them is by no means peaceful. Initially I had them both in a 72 community tank. One grew three times faster than the other and started picking on my other loachs, mainly the clowns. He actually ripped a fin off of one of them. I ended up putting him in my mbuna tank and thought "sink or swim". He fit right in there. He may even be the most aggressive fish in the tank...The other Angelicus is still less than half his size and has been no problem to any other fish. The aggressive one is just under 5 inches where as the other is less than 3.