Sorry, commented on the photo page.
It looks exactly like the button polyps I have, mine just don't have the cool green mixed in. Mine are all redish brown. They like snacks ocassionally. Cheetos, squid whatever.
Well, not sure what it is at this point, but it is isolated on a single rock so I'm going to watch it to see what it does, maybe let it get a little bigger for a better id.
i thought maybe mojo from comparing it from the two pics buti have learned there is so much more than what is shown there and if boomer thinks its not im going with him.
i would be careful withit t hough and keep an eye on it just in case, i have heard they can spread fast!!!