Bluegills begin spawning when water temperatures reach about 70°F. Spawning may peak in May or June, but continues until water temperatures cool in the fall. Bluegills have a long spawning season, generally from May or June until fall. Overpopulation can be a problem. Adult bluegills diet may consist up to 50% of midge larvae. Bluegills are found throughout Texas. Bluegill fishing is important because this fish, along with other sunfish, provides good catches for young anglers. 2 to 3 pounds is large for bluegills.