I recently picked up a bluegill and two largemouth bass (Bluegill ~4 inches) (Bass ~4inches, and ~5-6 inches). With that being said, i don't know which one to keep. I'm planning/wanting to just keep one to become really big rather than keep them all together their whole lives. How big and fast do the bluegill and bass grow in an aquarium? I prefer to keep a big bluegill but I don't know if mine will grow bigger anytime soon or if it is even capable of doing so. Anyone have any input with their experience?