Ophiodermatidae

The Ophiodermatidae are a family of brittle stars belonging to the order Ophiurida. They are characterized by their relatively small size, flattened bodies, and relatively short, thick arms. They are generally found in shallow waters, often on rocky shores and coral reefs, where they play a vital role in the marine ecosystem as detritivores and predators.

Ruby Brittle Star – Ophioderma rubicundum

Ophiarachnella ramsayi

Smooth Brittle Star – Ophioderma longicaudum

Common Names

Ophiodermatidae are commonly known as flattened brittle stars or snake stars.

Characteristics

Members of the Ophiodermatidae family share several distinctive characteristics:

  • Flattened body: They have a flattened, disk-shaped body with a distinct central disc and five arms that extend radially from the disc.
  • Short, thick arms: Their arms are relatively short and thick compared to other brittle stars.
  • Small size: They are generally small in size, with most species measuring less than 5 centimeters in diameter.
  • Scaly skin: The dorsal surface of their arms is covered with overlapping scales.
  • Tube feet: Like other brittle stars, they possess tube feet that are used for locomotion and feeding.
  • Color variation: Ophiodermatidae exhibit a wide range of colors, including brown, gray, green, and red.

Environments

Ophiodermatidae are typically found in shallow water habitats, often in association with rocky shores, coral reefs, and seagrass beds. They are generally found in the intertidal zone and on the continental shelf, but some species may occur at greater depths. They are common throughout the world's oceans, particularly in tropical and subtropical regions.

Ecology

Ophiodermatidae are important members of the marine ecosystem, playing a significant role in the food web. They are detritivores, feeding on organic matter, detritus, and algae, and they also prey on small invertebrates, such as worms and crustaceans. They are also an important food source for other marine animals, such as fish and crabs.

References

For further information on Ophiodermatidae, refer to the following reliable resources: