Here is what I believe...The Coppernose bluegill in the lakes I catch them generally grow bigger in size than the natives. It is fairly common to catch Coppernose up to a pound and a little bigger if you fish for them a lot. They both spawn 3 or 4 times, all summer long, and will cross with mate with other sunfish types to produce hybrids. Here are a few pics that show the differences. The 1s two pics are Coppernose & the following 3 are what I believe to be natives.... I think I remember reading somewhere that the Coppernose are native to Georgia & northern Florida, but not positive about that. They are a beautiful colored fish when in the spawn mode & my favorite sunfish to catch...they fight like crazy.