I just saw this thread.
I have had my flower anemone for 5 years now. It is green and white and very hardy. About 5 to 6" across when happy. I feed it every other day a nice size (1/2") shrimp. My cinnamon clown, a *****y 6 year old female has adopted it as her home. I'm sure she drives it nuts. She almost killed by Rose BTA which I had to remove from the display tank to save her. The flower anemone takes it and doesn't seem bothered. When I removed the rose, the clown returned to its former home, the flower anemone.
It attached in a rock crevice at the bottom of the tank which is lit by halides. It has never moved.
I also had an orange one, very beautiful but didn't make it.
I got mine from Reeftopia in Florida.