I was told that it is an RBTA that was bleached (it was in a tank with NO lighting for a month without supplemental feeds). It hated light the first few weeks (probably the change from NO to halide). My GSM found it VERY quickly and has been bringing it food, plus I feed it krill every other day. I moved it into the light now, and it's stayed out. I do feel its a bubble tip as the tentacles inflate most the time. Someone told me it looks like a Haitian anemone because of the purple in the tips, but I've seen RBTAs looking like that.
Please give me opinions. If it helps, GSM and Percula have hosted it (my GSM kicked the percula pair out).