Has a look of a bristle worm or fire worm.....If a fire worm I would remove it but bristle worms are ok, but I also say that when in doubt always remove it!
Yeah i thought it was a bristle worm. Ever since my wrasse jumped out of my tank i have seen them poping up. I loved that wrasse had him for a year and a half. I guess i will have to buy another one to take care of them so the population doesnt get out of control. Thanks