Actually being the pro fisherman I have caught these before. It is not a bluegill. It is Warmouth (Lepomis gulosus)
The warmouth is a species that most people would not recognize. In many parts of the country sunfish of all species are thrown into one general category such as bream, panfish, or perch. Many anglers are unaware of what species of sunfish that have caught, just calling it by one of these generic names.
This fish is very similar in shape and size to the green sunfish. They can reach a length of 12 inches and weigh up to a couple of lbs