We had to sell a 3-4"
Blue Tang (Dorey) because it developed a liking of our
Candy Cane coral. Was hard to spot at first. The polyps were just recessed and would never open. Had to observe the tank for several days before we caught it. Gave the disclaimer before selling - "enjoys eating LPS", hehe.
Tried several things with Dorey - feeding more often, feeding different foods, feeding more food. Nothing stopped its picking on the candy canes. Hence the sale. We ended up buying a smaller one (2-3") the same day from another member...no problems with the new one so far, and it has probably been a year or so now.
Ryan.