Stumpknocker (Spotted Sunfish) link below:

Spotted Sunfish

Age and Growth - Very little information is available on age and growth. A four year old fish average about six inches long.

Sporting Qualities - Because of its small size the spotted sunfish has limited value to the angler, but it is an active and fiesty panfish.
All of the Stumpknockers I have caught have been small ones about six inches. I have never caught a large one. I don't think they are able to grow to bigger sizes like some other kinds of bream even when there is an abundance of food for them.