Mark,
Finally someone who agrees with me that adult bluegill will eat fatheads. I have very limited experience with ponds but I do know that my pond was full of fatheads until the bluegill and redears reached about 4 or 5 inches long. After this the fatheads started to disappear. I haven't seen a fathead in my pond since last fall. On the other hand there are a lot of baby bluegill that hatched last fall. \:\)
Larry