Tiny stringy brownish striped worms

[mlm808it]

Hi any ideas? I’m new here and recently upgraded to a 75g mixed reef after my 30 nano exploded all over my living room.
Not usually bothered by these but they were brushing up on that white part of my new monti frag. Are these just baby bristle worms? They are super tiny and seem to just wave out from a hole in the rock. Never actually seen them fully out in the open. Thanks

 

[samnaz]

Micro brittle star

 

[mlm808it]

Micro brittle star

Thanks I believe you’ve got it!

 

[schuby]

It looks like a small bristle worm to me. I have them, too.