We put 50 fingerling crappie in our 1 acre pond along with tons of fatheads and channel cats. We were told that dead crappie dont float? and you need the cats to keep your pond clean. Don't know but we did it anyways. We are 1 year from breeding size and are planning on fishing it alot to keep the balance in check. We are planning on adding fatheads yearly to give them a good foodsource. Dont know if it is correct but that is what we were advised to do by some friends.