with the disappearance of the mystery growth on my live rock rubble, i was searching for the crabs i put in for my puffers a few weeks ago. i lifted up a piece of rock and found a bristle worm that looked to be about 3 inches or so, i didnt see all of him. but i also saw one that was about a half inch. pretty cool looking. i was reading up a little bit and read they are good as long as they dont cause havoc and that the eat the uneaten food and stuff. i have been waiting to find some sort of hitch hiker