My black crappie looks terrible. He has shredded fins and has white scratch markings on him (it looks different from the design) and has it on his lip. The only thing I could think of is that the smb was mean to it. I have a spare 20 gallon, the only problem is I would have to set it up. my current 20 gallon has minnows and other small fish I worry about, even though the black crappie is 2.5-3in. What can I do other than give them away since my LFS usually do not take natives since they are "not wanted".