I've only had him for a day and so far has not bothered anything in my tank, including the feather duster. He is fairly large, bigger than I would have liked. My tank is only 50 but well established.
I recently added a longnose butterfly to my reef tank. I did this to help eliminate the many bristle worms that are out of control. I know the butterfly fish are not reef safe but did not know what else I should do. Any advice about bristleworms would be appreciated.