Hobbies And Interests
Physical Characteristics
Bristle worms range in size from only a few millimeters to 20 inches long. When they infest fish tanks, their growth is usually limited, but bristle worms living on rocks typically grow to be several inches long. They are normally red or orange, with centipede-like legs. Though bristle worms come in a variety of shapes, and some may not even look like worms, the ones that infest Florida waters typically have flattened tail ends and white leg-like protrusions only at their front ends.
Behavior
Bristle worms are primarily nocturnal and skittish. They may hide under rocks, in debris or in sand during the day. Though they do not aggressively chase people, they will promptly deliver a painful bite if startled or picked up by a person.
Diet
Bristle worms are primarily scavengers, feeding on detritus, decaying plant and animal matter and other waste products. Some bristle worms, however, are carnivores who actively hunt for live prey, primarily plankton and very small fish. They play an important role in the decomposition cycle and help to keep oceans free of debris.
Worms in Captivity
Bristle worms frequently spontaneously appear in healthy, well-established saltwater tanks. Though very large worms can pose a threat to fish, most bristle worms are harmless. They play a helpful role in keeping aquariums clean and can even prevent diseases from developing in fish tanks. Bristle worms only need to be removed from fish tanks if they are hunting fish or overcrowding the tank.