Dorvilleidae Worm???

[Jackmot]

Hey!
So, I found yesterday 5 of these worms hanging out in the tank (for the moment my livestock is fine), the closest match I've found is Dorvilleidae but im not completely sure of it.
What do you guys think? Bad hitchhiker?
Thanks :)

 

[Goaway]

Those probably are. I don't see many of them in person. Those don't resemble syllidae. Looks like dorvilleidae worms. You can probably keep those.

 

[Jackmot]

Well, that's good new because so far I've found 8 of them hahaha. Thanks!!