To be honest i under estimate polys. They have comlpicated behaviors just like cichlids... though not as aggressive but complicated none the less
Yeah I have had different upper jaw polys and have never really seen what I would call pecking order behavior. And then the two new lower jaws come into the tank and I see a whole different world of behavior. Yep complicated for sure. Ive seen biting at times and then mellow at other times. lol, I guess they have their moments.