I think that RES looks female, but curious to hear what others say.
CC, you asked about Theo's photo of the gillcracker, check out the "cheeks" on that fish... See the mottled pattern? Pure bluegills do not display that. The opercular is shaped a little differently than what I would expect to see on a male BG of that size, and the overall pattern of color, body-wise, appears to indicate another influence as well.
That's what I see anyway....
