I second that motion....bad fuzzy crab, harrass and/or eats acros .
I got mine on a Bali coral that was contracted and regressing. I gave the fuzzy guy, the porcelain swirl and the coral is much better.
....did get hell from the wife though!

...."But he's so cute"
CUTE? He'd better serve free beer! if he wants to nibble on my Bali's!

Don't think he can harm much in the refugium though, might not live long without acro-munchies, depending on how specialized the diet is.