Thanks for your help. The pictures of Tilapia that I have seen also have vertical bars on them. I have other bluegill, that have more laterally compressed body and copper belly. I released those. Maybe that is the difference between native and coppernose.
It is very possible that these are 2004 hatch. The pond was loaded with minnows in the spring and I stocked Tilapia later on. Now I can't find the Tilapia. I got one about 2lb. They are easy to ID at that size. I would have expected the pond to be this loaded with Tilapia, not bluegill.
Finaly, the pond is old enough to do some pond managment.
