Earth Worm turned submarine?

Hello,

Newbie..no doubt with a typical newbie type question (sorry)

I've searched this site, others and clicked on the various links for photos but still I'm not sure if I have a worm that is friendly and useful (in a tank) or a pest. If I had been gardening I'd swear he'd sneaked in from outside, he looks just like an earthworm to me. I bought some cured live rock today and he came out of it like medusa when I put the rock into my tank. He's brown, has circular ripples along the length of his body. Shrivelled up he's about 2 inches but was about 4 inches when stretching to come out of the rock. Can someone please tell me whether he should stay or go. As we speak, he has a buddy that just crept out of the same rock. (unlike some worms I've read up on, he's not shy to come out in the light.

Thanks in advance

Jill

 

Any chance you could post a picture?

 

Photo of said Worm

Thanks Amcarrig..

Here's hoping it's a positive addition to the tank.

Cheers

Jill

 

It looks like it could be a bristleworm but the picture is a bit fuzzy. Maybe this link will help you

Polychaete Annelid Identification, or “You Can Always Tell A Bristle Worm… by Ronald L. Shimek, Ph.D. - Reefkeeping.com

 

Thanks for your help!