I wish i could get a pic of these, but they are too small for my camera to focus on. They look like a really thin worm, thicker than a hair and fuzzy looking. It is hanging out of my chaeto in the fuge and it kind of jerks every 5 or 10 seconds. I can see two of them and they're pretty long, maybe 2 or 3 inches. I'm pretty sure it's not bristle worms. Does anyone know what these might be?