Mac,
You are correct it is a Sebae Anemone and is about three inches across. It's a new tank with only live rock, one clown fish and several turbo snails. I wanted to buy something my clown would like hanging out in, but as of now the clown hovers mid to high in the tank and the anemone is on the bottom. Perhaps I was hoping for too much for the Percula clown and anemone to pair up. Is there anything I can do to help this happen? I bought a few raw tiger prawns from the local market and cut a small piece and fed it to the anemone. I ensured it was small in order to digest it before it went bad. The little guy seemed to like it because it wet right to the center and down it went. I have read that if the anemone and clown pair up, that I won't have to feed the anemone much but if they don't I should feed it a small piece of shrimp once a week.
I have another question regarding my tank. Since it's a 55gal, would I be OK to buy another clown or two and put them in the tank? I read Maroon clowns can be more aggressive than other types. Would I be OK with buying a couple of black Percula clowns? Any suggestions?