So I have a tank with a pumpkinseed, orangespotted hybrid, and 3 bluegills. The only reason I actually put bluegills in there is because I needed some placeholders while I grow out my longear and dollars so that the pumpkin and hybrid don't kill each other. Really I honestly never found bluegills particularly attractive or colorful but they are so abundant and easy to catch so I grabbed a couple when I couldn't find more pumpkins.
I'm actually surprised at how much I've grown to love the bluegills and have found that they are actually quite pretty sometimes! One thing I like is that they actually did the opposite of what sunfish tend to do in aquariums and they got darker instead of washing out. Also as they have settled into my tank their stripes have developed pretty nicely and they even sometimes get a shimmery blue color going on their fins and a metallic purple on their belly. Pretty neat! I almost want to make my tank a bluegill shoal but I already invested money in my longear/dollars.
Hoping to get a bluegill tank sometime in the future! Also, do you guys think that bluegill could be bred to bring out those blue/purple colors they get? Would be awesome to see that.