Ok I would like to get everyones general opinion on Bristle Worms. I have done about 4 hours worth of research including many internet websights and calling many various fish stores and I have got no clear outlook on if they are good or bad. On one hand they are horrible to have because they become oppurtunistic predators, but I watch some in my tank all the time and they move awefully slow so there only true prey are sea anemones and clams or very retarded or slow moving fish. I asked around and they said there are so many kinds of bristle worms that it is hard to actually get the kind that are the ones that are dangerous. The ones I have when very small are a reddish color with white bristles, the ones when they get larger about 4-5inches long are greyish and have white bristles. Are these the bad kind? I constantly remove the big ones because it really worries me. They reproduce constantly in the aquarium so getting rid of all of them is almost impossible I am told. The other outlook I have gotten on them is that they are extremely helpful to the aquarium. I talked to the fish store and they said they have had clams in this one tank for many years and nothing has attacked it. They said they have probably thousands of bristle worms for all they know in the tank. I try to keep the smaller ones because I notice them eating fish waste off the sand and cleaning everything in the tank. Should I be worried about the bristle worm populus or should I just keep doing what I am doing, I am a tad worried because when my moonlights were on I looked near one of my corals and one looked like a centipede it was so big! I waited for him to come back out but he never did.