ID needed, Weird Stringy Stuff on Acro

[Flatlandreefer]

I was looking at an acro frag and noticed a weird stringy substance on one it, any idea what I am looking at?

 

[BranchingHammer]

Mesenterial filaments/mucus. Usually a sign that the coral is stressed if they are always present. If they come out only occasionally during feeding or other times, no need to worry.

 

[Flatlandreefer]

Mesenterial filaments/mucus. Usually a sign that the coral is stressed if they are always present. If they come out only occasionally during feeding or other times, no need to worry.

Hopefully it’s just a feeding response, I did feed a fair amount of frozen food an hour or so before that. I dipped it and moved it to a slightly different spot so we will see how it does.