i read an article by the Kentucky Dept of Fish and Wildlife--if you google Kentucky Spring 2004 crappie study result you will find the article. Fish and Game tagged black and white crappie and released them into a creek on Kentucky lake. They tracked the crappie movement from March to July. I believe half of the fish at the end of the study were still in the same creek they were released in. Very interesting article. May answer a few of your questions.