Flame angels (actually all dwarf angels) are kind of hit or miss when it comes to coral picking. None of them can be trusted long term IMO. I have tried 5-6 different species, all having to have been removed. They would normally leave SPS and softies alone but would decimate fleshy LPS, clams, etc. That being said, you will probably get a lot of posts from people that have had 100% success....just depends on the angel.