Help me identify worm - good or bad guy?

[p_lipa]

Hi,
today when the lights were slowly turning down I noticed small few small worms swimming in the tank upper space. They have spiral/twisted motion and was swimming towards food. Is this dorvilleidae worm or any similar Bristleworm? I don't see any bright red color, so I'm guessing that it is not harmful spices, but just wanted to be sure. Is this something that I should be afraid of?

 

[ISpeakForTheSeas]

Welcome to Reef2Reef!

Yeah, that's a bristleworm epitoke (the reproductive stage of a bristleworm). I can't tell exactly what kind, but a Dorvilleid species is probably a good guess.