Please Help identify this hitchhiker

[Wayneybop]

This has started to grow on my granny green smith zoanthid.

Should I take the Zoa off the frag plug to remove what ever it is?
I did use coralRX pro dip but this must not be effected by it.

 

[C_mo97]

That is aiptasia I would take it out as soon as possible before it spreads.

 

[Wayneybop]

Thanks will get on that now.

 

[C_mo97]

Also when taking your Zoa off the plug make sure you wear gloves and eye protection the fluids that come out of Zoas are highly toxic.