Thanks so much! I've caught these types many times in various lakes around The Woodlands area (40 miles north of Houston). I think they stock these lakes when they make them.
Yeah, they get big, and I think that's why people originally stocked them. They're just outcompeting the natives... so I hope you made a sandwich outta him. And the next, and the next...
Looked like a bluegill to me too, but I haven't caught one in a long time so I thought I may have been mistaken. There's more green sunfish and longears around here than bluegill so I rarely catch them anymore. I don't think I've caught a bigger one since I was a teenager in fact.