General rule of thumb that I have heard for any Angel in a reef tank...keep them well fed and it will discourage them from "snacking" on your LPS/SPS. I currently have an Emperor Angel that's a 4" juvenile. In the tank I have added colt coral, zoos, mushrooms, tube worm, long tentacle anemone and another small 1" colt coral frag from my office nano reef tank. So far the Angel has been good, however I did catch him inspecting the 1" colt coral frag and nipping a few times. Just checked today, frag is still in one piece. I plan on adding blue Maxima clam...fingers crossed he will leave it alone. I'd also like to add some red sponge, but I figure that is just tempting fate there LOL


