In 2010 I put in 10 pounds of fathead minnows in the spring and another 10 pounds in the fall. Since stocking them I have noticed my bass look fatter and healthy. My pond is about 1 acre in size and there are no crappie in it. The only reason I added the fatheads was to give my bass something else to eat other than my bluegill. I had started to notice that the overall size of my bluegill was decreasing. I made the assumption that it was because my bass were hammering them. So far it looks like I was right as my bluegill have gotten bigger and the bass seem fatter.