Search for crappie in the search function on here or using Google. There is a plethora of info on them in smaller ponds. To say the least, they are quite the challenge to manage. For the short term, they may work out... However, over the long run you'll probably end up with a mess. There are a few things you can do to try to prevent that though. However, the recommendation you already received is the wisest... Don't stock them!