It can happen to any herbivore. I had a hippo tang and powder blue with select taste buds. Whatever it is that kicks in, who knows why?Aw ok fair enough ,probably why when just spent 15 minutes reading last 10 pages again,I didn't see it ha ha,well you tried but if eating coral and dont want it,only one option I guess,I may have it to come as got few potential coral nippers ^_^
They get one taste and that is all it takes.