Thread like pest ID?

[carnthetiges]

Hoping someone can ID this for me.
Recently purchased a small devils hand attached to a piece of rock.
There was also a tiny nub of what looks to be sinularia attached (what you're seeing in the pic).

I've recently noticed these long white threads extending from the rock, close to the base of the sinularia.
At first i thought it was hydroids but the the sinularia has improved over the week extending upright with the beginnings of polyp extension (my understanding is hydoids would cause everything to close up?).

It's just two clowns in a 20g on pellets so there's no coral food etc.
Light is a kessil a80, 8hrs a day.

Thoughts?
Cheers

 

[rayadog]

White light pic is better. It looks like spaghetti worm or adjacent type. Relatively harmless and the soft corals tend to close up more than other corals I feel; just cause. It’s mostly normal.

The worms are pretty cool. They’ll gather whatever missed food, poop, detritus, etc. they can find with their tendrils and that’s pretty much the extent of their nature in a reef tank.