My coral beauty is the oldest fish I have--almost five years. Beautiful, pretty good natured, and so far he doesn't pick on the few things I have--but I do not have an extensive reef-green star polyps, some xenia, and the tree thing with I have temporarily forgotten the name of. All low end stuff that is pretty hardy. However, all of the dwarf angels from the place I get my fish are listed as "can be reef safe with caution." So really there isn't any way to predict what is going to happen. All I can say is good luck! I tell you the one I like--it's that little pygmy angel--that thing is cute!