Worms?

[Jglade]

I have this worm it's red and looks like a bristle worm in my tank I've never seen it fully and just now got to reading about it how bad are they should I remove it or leave it it's about 3/4 of a inch from what I've seen it could be longer idk

 

[NanaReefer]

Check here for a better I.D. www.chucksaddiction.com
Since we have no pic here to positively I.D. it for you.