im pretty sure its not an anemone (have about 8 of those trying to get rid of them day by day), had another on the rock it slowly unstuck itself and drifted away (died?) with the right light the tips of each little "arm" is a bright bright green. ill try feeding it something, regarding the dusters, will they survive my cycle? they seem more than happy at the moment. need to see how and if they reproduce would be awesome to get more of them on the other rocks