Hitchhiker ID?

[jmg416]

I just saw this little red wormy guy hanging out on top of my catspaw. I'm just wondering if it's anything to be concerned about. Do I need to give the whole colony a dip? Thanks for any input.

http://i1255.photobucket.com/albums/hh639/jmg416/023_zpsc0ab5601.jpg

http://i1255.photobucket.com/albums/hh639/jmg416/033_zps79b30c00.jpg

[MARINECRITTERS]

Looks like a common bristle worm, harmless.
http://i1255.photobucket.com/albums/hh639/jmg416/033_zps79b30c00.jpg

[jmg416]

Cool. Thanks.