Zoa Pest ID

[sethchislesa]

I got a fire and ice zoa alittle over a month ago and over the last couple of days I have observed an orange patch show up on some of the zoas. (Shown in the middle left polyp in the top image and the bottom middle polyp in the bottom image). I was wondering if anyone knows what this pest is and a possible course of action.

 

[tbrown]

Do they move? Possibly an Acoel flatworm.

 

[sethchislesa]

Do they move? Possibly an Acoel flatworm.

They haven't moved as far as I can tell.