Worm? identification and what to do

[jepuskar]

Hello,

A couple months ago I noticed one of these in my tank and thought it was cool. Must have came in a rock I purchased from my LFS months ago. Now I have quite a lot...they are coming out from every crevice when I feed the tank. All I want to know is...what are they and do I need to do anything about them? They don't seem to be harming anything, but Typhoid Mary seemed harmless too.

Thanks

Jason

 

[Betta132]

Bristle worms. They're basically earthworms, just don't touch them. They'll stick painful little spines into your fingers. They eat gunk and don't clean up, so they're good. If you have five billion, that means they're finding a lot of food and you may want to cut back on feeding just a bit. The only harm they can really do is sting you if you grab one, but some people don't like the look of them.
Some thing will eat them, but if they don't bother you I'd just slightly cut down on feeding and leave them alone.