I just got a trochus snail a few days ago. He seems to be doing well but while watching him in the tank tonight, I noticed a terrifying worm-looking thing peek its head out from under the rock. After a quick Google search, I’ve discovered that it’s most likely a bristleworm. I’ve seen some people saying that they’re helpful and some that warn to remove it from the tank immediately. The trochus snail is the only thing in my tank right now so luckily I don’t have to worry about any other animals. Still, I’m quite nervous about him. Will the worm attack him??? He’s just now getting used to his new home and I’d hate to see him go. I’ve attached the best image I could take of the work but its pretty bad quality. It has a pinkish body with white spikes on it and doesn’t seem to be very big. Just for reference, it’s lurking in a crevice near the bottom of the rock while my trochus is on the top. So basically what I’m asking is: is this thing dangerous? If so, what’s the best way to remove it? And WILL IT HURT MY TROCHUS?