I have one of the beasts in my tank as well. All I can think is that hes a full grown bristle worm. Mine is also grey with the red 'racing' stripes down the sides and all white bristles. I'm sure that as thge smaller pink worms grow and mature they would get to ths size. Mine seems to be content with cleaning up the sand and freaking out any females who happen to look into the tank.
__________________
Gerald
Home:160Gal. Foxface, Yellow Tang, Blue Tang, Coral Beauty, Lawnmower Blenny, Starwberry Dottyback, Mandarin Goby, 2 Percula Clowns, Green Brittle Star, Brown Brittle Star, Chocolate Chip Star, Cleaner Shrimp
Store: 33Gal. Green Brittle Star, Chocolate Chip Star, Peppermint Shrimp
|