I agree, for the most part bristle worms always get the bad rap and get caught and flushed....I have a huge
in my one tank that is like a pencil, and he is awesome to watch forageing for food....It has yet to do any damage to anything.......If your dead set on getting rid of them make yourself a birstleworm trap, all it takes is a slim plastic tube like a pill container, with a hole in it and some bait....place it near the live rock and wait. YOU can tie a piece of monofiliament line to it to retreive it. Some folks also place a bit of filter floss n a pill container with soe bait and drill a hole for an entrance, and often times the worms will stay in the tube for a long time under or in the filter floss...
I have a book by semick or somethng like that and in it he states out of al the
out there literally thousands of different kinds there is really only a handfull that are a problem and fortunately they are not as commonly seen as the good ones are.