As the title says, I'm wondering a few things about crappie. I have a 125 that I plan to stock with sunfish and I'd like to add a black crappie. Would the crappie be compatible with sunnies? Also, what is the average size of a black crappie in an aquarium? I go fishing a lot, so I know they can grow pretty big, but what is an honest size they reach in the aquarium?