I had one in the small, overstocked 80 l community tank that I inherited when I got started. It ruled the tank, but wasn't too bad.
When I transferred the community to my 450 L tank, it started nipping anything that came into it's side of the tank. I tried putting it back into the 80 for a bit, and then reintroducing it once the other fish were established, but it just got more and more aggro.
I donated it to the LFS in the end. Shame really, as they are beautiful fish.