ID Please

[floorman66]

Can someone ID this please? When the polyps are out they are flower structured. The main body is dark purple with bright green polyps.

[channingd]

That's a green star polyp. (gsp)

[Finland]

Yep, looks like gsp. They can be very invasive, don't mount any frags close to them.:D

[Frick]

Almost looks like it could be an Acropora that is encrusting.

Do you have a picture of the polyps when they are out?