Fish that will eat tiny feather duster worms?

[msteane]

So I have lots of those itty bitty feather duster worms in my tank that comes as liverock hitchhikers; the ones who's feather is a pencil width or so. They're rather pretty, but are starting to take over some of my zoas. Is there a fish out there that will eat these but leave my big ornamental feather duster worms alone? Maybe some sort of wrasse I'm thinking. I have a couple leopard wrasses in my tank already but they don't touch them.

 

[jroovers]

Copperband butterfly. Not sure if he will nip at the big ones though.