Ophiothrix (Ophiothrix) savignyi is a species of brittle star belonging to the family Ophiotrichidae. It is a common and widespread species found in various marine environments.
Description and Characteristics
Ophiothrix (Ophiothrix) savignyi is characterized by its slender, flexible arms, which are typically 5-10 cm in length. The body, or central disk, is relatively small, measuring approximately 1 cm in diameter. The arms are covered in small, granular scales, and the dorsal surface of the central disk has a distinctive pattern of raised tubercles. The color of this brittle star is highly variable, ranging from reddish-brown to grayish-white. It has been observed in a variety of colors including brown, gray, white, yellow, and even a vibrant red.
Habitat and Occurrence
Ophiothrix (Ophiothrix) savignyi is a widespread species found in various marine zones, typically inhabiting shallow, rocky areas. It thrives in intertidal zones and subtidal areas, often in the infralittoral and circalittoral zones. This species is well-adapted to life in these environments, where it finds ample food and shelter. Ophiothrix (Ophiothrix) savignyi is known to inhabit a variety of environments, including coral reefs, rocky shores, and seagrass meadows. It is commonly found on hard substrata, but can also be found in soft sediments. Its depth range extends from the intertidal zone to depths of around 50 meters.
Taxonomy
Ophiothrix (Ophiothrix) savignyi is classified within the Class: Ophiuroidea, Order: Amphilepidida, and Family: Ophiotrichidae. Brittle stars are characterized by their star-shaped body and long, flexible arms. The family Ophiotrichidae includes a diverse group of brittle stars that are known for their ability to regenerate lost limbs and their often brightly colored bodies.
Feeding
Ophiothrix (Ophiothrix) savignyi is a carnivorous species that feeds primarily on small invertebrates, including crustaceans, polychaetes, and foraminifera. It uses its flexible arms to capture its prey, which it then transports to its mouth located on the underside of its central disk. Like other brittle stars, Ophiothrix (Ophiothrix) savignyi feeds on a variety of small organisms and detritus. They are opportunistic feeders and will consume anything that is small enough to fit into their mouth.
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