They will not get enough food and will starve. They eat parasites and even with what we stock in a heavily stocked aquarium........ they will not get enough food.
http://www.aquahobby.com/marine/e_cleaner_2.php
It's better to keep them in the oceans I think.
Sammy.......... it's good the he has lived for 6 months but I've heard tell of them not lasting long in capivity. 6 months is a very short time. If that fish lasts 2+ years........ you have to write an article about the care you are giving it.
Cheers,
Vic [veng68]