I've noticed some of my Zoos and Ricordia retreating. These particular specimens have always been healthy, so I suspected something was going after them. I watched one night and sure enough, a bristle worm (or worm of some type) darted out of a hole in the rock and took a chuck out of my zoo colony! My reef has been set-up for over a year, so I don't know why this is happening all of a sudden, but it is. Maybe this thing hitch hiked on a recent pice of coral that I bought. Anyway, I have it now and I got to get it out of there. Do the bristle worm traps work? This thing moved fast and it does not look like it will be easy to catch, so I need some advice.