I see threads all the time asking about the reef safeness of dwarf/Pygmy angels .... Well, my Flame Angel has turned into a holy terror, after over a year of being a model citizen. What caused the change I cannot say, but I have had to remove all of the clams from my tank and most of the LPS. SPS, zoos, and softies left alone. At the end of the day I like the Flame and Potters more than clams or LPS, so acceptable trade off for me, but it's a cautionary tale.