Two 6 inch cichlids, 1 pleco, 1 pictus, 1 leporinus in the the 50g tank. Thinking of a critter. Cichlids will eat most anything like shrimp and adf's. Crayfish are like 1.50 at the lfs so if they get eaten no big deal. Only fear is if it will be a problem for the pictus catfish who hangs by the bottom, or the stagnent pleco? For that matter, same questions for a decent sized crab. Also would the crab get eaten cause I might care more about him?