this question has been asked millions of times. its really 50/50 when it comes to flame angels. i hv one with corals and clams, and its safe. it likes to nip at things, but no damage. kind of corals certainly increases the chance. most dwarfs from i read, if they do eat, r corals such as brains. i hv brain corals, and it hasnt bothered any of them. i took a chance 14 months ago when purchased the flame, and it worked out.