As CAEs mature, they become less efficient as algae cleaners, and more likely to feed off the slime coat of tank mates, especially slower moving or flat bodied fish (watch your Gouramis). Losing the slime coat could lead to infection. I have had a bad experience with one, and personally wouldn't own one again (or palm it off on a friend) I advise you find an LFS that may take it (don't expect anything for it) Sometimes I see these fish in sump tanks at LFS' with little to no chance of rehoming...I think it is sad that they are sold as community fish. They should be sold with the same caution as Cichlids, or other predator fish IMHO.