One of the more likely candidates is the Heniochus also known as the poor man's Moorish Idol. Again, like with most Angels and so on, there will be exceptions. If you really want that fish, you have to be prepared and observant for any changes in behavior. I got one a few weeks ago and it hasn't touched anything. On the flip side, a Blue and Gold Rabbit that has been in my tank for a year or more, wiped out all of my zoos in two nights. It is always a gamble.