May be beak-like mouth structure could be indicative for the pinching wrasses, like the cleaner wrasse has (just a wild guess)?
I found the thread, where the cleaner wrasse was pinching clam mantles repeatedly, but it was observed by somebody in a friend's tank. May be there were other experiences.
The problem with trying (in case of my wrasse) is that for catching it all LR and most of the corals should be removed - it's fast and small, will fit in any hole.
May be I place it in 10g sump behind 12g NC, still thinking about the better way.