cleaner wrasse

[justinl]

forget it. this fish is an extremely bad choice because all they eat is fish parasites; and even the rare few who accept prepared foods often die long before they should. The number of successful cases can be counted on your hands... the number of unsuccessful cases that end up with dead cleaner wrasses every year is something I don't even want to know. these are better left in the ocean to clean wild stock of parasites... if you've ever seen a line of fish waiting for a single cleaner wrasse's services in a wild reef, you would know why.

edit: another solution you might look into is neon gobies.