parasite?

[uconnfan]

I just purchased some live rock for my new 40 gallon aquarium the other day. When I came home today I noticed that there were these centepede looking things crawling around on the bottom, I will try and get apicture if I can but if any one has a n idea of what it might be that would be great.

 

[beth]

That would not be a fish disease. Likely just natural and benefical fauna of live rock. Be sure to feed the rock.

 

[yellowtail]

sounds like a bristle worm