Not Reef Tank Suitable
Not Suitable for Fish-Only Tank
Range: Aruba, Bonaire, Caribbean Sea, Cuba, Curaçao, European waters, Gulf of Mexico, Madagascar, Mozambique, New Zealand, Panama, and Red Sea.
Note: For another view of this bad worm, see The Reef Aquarium, Vol. Two, by Julian Sprung & Charles Delbeek, page 418.
FYI: Generally called the "Clam" worm, this predatory worm is a long orange colored worm that is active during the night and feeds mainly on mollusks, e.g., snails and clams. Can drill small holes through the sides of Tridacna shells and kill the clam. Can also secrete mucus around small clams and suffocate them, then devour their tissue. If you notice either a hole through the side of your Tridacna clam, or the unexplained death of snails in your aquarium, you should view your aquarium during very early morning hours with a small flashlight to see whether these worms are the cause. Bait them out as described for bristle worms using defrosted clam/mussel meat or try to remove the rock they are living in.