Going by the incredible aquarium packed with these fish at Shedd Aquarium in Chicago, and the complete lack of even torn fins, it may be possible to defeat aggression problems with them in the same way one would do with Mbuna; by total overload in numbers. Has anyone tried this?
My tank is pretty loaded with aggressive cichlids, and very few problems so far even though there is quite a bit of size difference. I think this is the only reason everybody gets along.