I have one.. I almost decided to remove him when i upgraded ... he messes with my snails.... and the snail eggs,,, but i decided he was to pretty....
Does not mess with my cleaner or peppermint shrimp..
I started feeding him twice a day and it seems to help... weird.. him and the yellow tang are like a mated pair.. seem to always be swimming together.. he even eats off the alga clip..