Ya I think I'm going to end up trading him for a Senegal and a cichlid but I have to be careful with cichlids tooThey are hit oriss it seems. If the knife is your favirote i would consider selling the ornate and getting some of the polys mentioned. Or you could try adding more polys to see if it helps spread the aggression.
Btw mine was a p.i.t.a but only towards other polys

