Aiptasia?

[A. Ocellaris]

Originally thought that these were polyps of some kind, but I think they might actually be aiptasia. If they are, any suggestions on the best way to deal with them? They appear to be on the rock that the toadstool coral is on. A couple of other corals are below, on the same rock.

Could I cut the toadstool above the aiptasia (at the green line) and adhere it to a new rock? Not sure I can get the other corals below off, but I could try that too. I'd much rather risk losing a little livestock instead of having this invade my tank.

Aiptasia are circled, in red, same location in all pics.

Thanks!

 

[McFly]

Hard to tell from the pic but they look like small feather dusters, not Aiptasia.

Aiptasia are brown and soft.

 

[A. Ocellaris]

There is a BIG feather duster on the other side of the rock....I'll try to source a better pic. Coming soon!