What is this ?

Yeah, I am well aware of that. I have 2 BTA's in my tank now, and as the VP of our reef society, I have seen hundreds of clones over the years.

Asexual production gets interesting, so you never know. Corals like favia and favites will ooze off the parent and create new colonies, so despite the anemone being a single creature and not a colony like a coral, weird stuff has been known to happen. Even scientists don't know much about the underwater realm.