Almost, but not quite. Bluegills are prolific breeders. Controlled breeding of larger fish (or animals in general) will result in larger stock animals. Stunted gills, on the other hand, are usually a result of too much competition for the limited food supply. By culling the herd of smaller panfish, you are allowing the remainder to grow to their true potential or beyond.Theory is large fish got that way by not being stupid and large fish spawn potentially large fish - a gene thing. Stunted fish spawn more stunted fish.