Need ID on this creature PLEASE!!

[PanaReefer]

So I decided to remove my PC rainbow to dip it because for some reason it was STNing and found this.

 

[jeffchapok]

Looks like an ordinary bristle worm. Some people remove them but I leave them alone.

 

[KJ]

So I decided to remove my PC rainbow to dip it because for some reason it was STNing and found this.

Dorvilleidae.

Google Search

 

[PanaReefer]

Looks like an ordinary bristle worm. Some people remove them but I leave them alone.

just found out its a dorvilleidae worm. thank you.

 

[NatD]

just found out its a dorvilleidae worm. thank you.

Same thing.