I can't even begin to comprehend how you get a bluegill like that LOL.
You get a Bluegill like that by hybridizing it with a Green Sunfish. Yes, that is a Hybrid Bluegill, the same ones recommended as a solid companion lepomis species choice for SMB fishery. HBG still get a negative rap on the forum, and I used to be part of that camp. On a lighter note, how can one dislike something one cannot identify? Not picking on anyone here, just trying to underscore my original advice which was to suspend judgment until one researches/learns more. Requires a willingness to shift paradigms which I understand is sometimes hard to do - but learning is why we're here after all.
Tony wrote some great articles for Pond Boss Magazine in 2014 I recommend to anyone who wants to learn more about HBG, their role in a fishery, and management techniques. Contact PB HQ and request the back issues, well worth the investment.
Thanks Tony for your efforts to educate us over the past few years - that right there is a remarkable fish and you're doing amazing things and creating new fishery management science with your HBG experiments.