I’d Pectina pest

[frankiezzway]

I recently purchased a Indo Pectina from frags2fishs. After a good coral Rx dip he was placed in tank. After a day or two of observation I noticed this small part of the Pectina where the skeleton is showing. And I believe there is a pest but I’m not sure can someone give me some insight

 

[reefpunk707]

Looks like an aiptasia they can spread easily and irritate corals.