tswoboda, the second link you posted is a fantastic article on the different reproductive strategies bluegills take based on genetics.
I didn’t know that not only do the “sneaker” and “mimic” males grow smaller, they also live much shorter lives due to their genetics. They will NEVER become larger to take on the bull bluegill role. I always thought (wrongly) that the smaller “sneaker” and “mimic” males will slowly grow larger and become the bull bluegill.