Its a bit too agressive for a reef.  I've had it in my office nano and its taken out all of the sexy shrimps and the fireshrimp.  I'm setting up a new nano with more peaceful inhabitants so I will sell the dottyback.  I've had it since Feb 20.  Its good for eating ALL of the bristleworms in your tank too.
$10
http://www.liveaquaria.com/product/p...cfm?pCatId=170
http://www.practicalfishkeeping.co.u...article_id=215