I zoomed in as much as I could, but I could not see any fuzzy rows along the sides of the worms, which would indicate Bristleworm. Baby Bristleworm 'bristles' can be hard to see at the best of times. As you are able to see the worms up close and personal, it might be easier for you to compare what you see to pictures. Here's a link to get you started: http://www.extreme-aquatics.com/707/saltwater/how-to-indentify-worms-in-your-reef-aquarium/