ID Please - Red Worm

[AirManFL]

I have seen a few of these in my tank. Here is one crawling out of a dead snails shell.

Is this a fire worm? Do I need to be concerned. I currently only have CUC and some soft corals in the tank.

http://www.kulpcentral.com/images/redworm.jpg

Thank you in advance.

Rob

[bertoni]

That looks like a basic fireworm, and most likely is useful for tank cleanup. Sometimes, live rock contains less pleasant worms.

[Percula9]

Looks like a bristle worm. Nothing to worry about, actually beneficial to the tank. If it bothers you then remove it. I have lots of them in my refugium.

[God of thunder]

I´m a little confused, are those guys benefitional or a plague?
The opinons seem to vary..?

[greenbean36191]

Beneficial.

[taillonjohn]

beneficial, agree

[bertoni]

I would say, usually beneficial. The worm pictured is fine, but there are a lot of species of worms that show up in tanks, if I may split a hair or two.