Common name: black brittle star

General information

The Brittle Star, or Banded Brittle Star, scientifically known as Ophiocoma echinata, is a species of echinoderm that is popular among reef aquarium enthusiasts for its scavenging abilities. These invertebrates are characterized by their long, slender arms which they use for locomotion and capturing food. Their coloration can vary, but they often exhibit bands of brown and tan which provide camouflage against the reef substrate.

Care

Brittle Stars are generally easy to care for in a reef aquarium. They require a tank with plenty of live rock and a sandy substrate where they can hide and search for detritus and uneaten food. They are nocturnal and tend to hide during the day. It's important to ensure that the aquarium is well-established with a stable environment, as sudden changes can stress these invertebrates.

Reproduction

In the wild, Ophiocoma echinata reproduces by releasing eggs and sperm into the water column, a process known as broadcast spawning. In the aquarium, however, reproduction is less common but can occur if conditions are favorable. The larvae are planktonic before settling to the bottom and developing into adults.

Symbiosis

While Ophiocoma echinata does not have the same type of symbiotic relationships as clownfish or anemones, they do play an important role in the cleanup crew of a reef tank, consuming detritus and leftover food which helps maintain water quality.

Habitat

Ophiocoma echinata is found in the Caribbean Sea and the western Atlantic Ocean. They inhabit coral reefs and rocky areas, often hiding under rocks or within the reef structure during the day. They are known to occur at various depths, typically from shallow waters to about 40 meters deep.