Common name: harlequin brittle star

General information

The Banded Brittle Star, or Ophioderma appressa, is a species of brittle star often found in the tropical Western Atlantic, including the Caribbean and the Gulf of Mexico. This echinoderm is known for its long, slender arms which are banded with contrasting colors, typically brown and beige, making it a visually appealing addition to the reef aquarium.

Brittle stars are closely related to starfish but are more agile and have a distinct central disc with five flexible arms. Ophioderma appressa is nocturnal and tends to hide under rocks or within crevices during the day, emerging at night to feed.

Care

Banded Brittle Stars are relatively easy to care for in a well-established aquarium with plenty of live rock for hiding and foraging. They are scavengers by nature and will consume detritus, uneaten food, and small organisms. It is important to ensure that they are receiving enough food, as they can be outcompeted by faster-moving tank mates.

Reproduction

Ophioderma appressa reproduces both sexually and asexually. Sexual reproduction involves the release of eggs and sperm into the water column, where fertilization occurs. Asexually, they can regenerate lost limbs, and in some cases, these limbs can grow into new individuals.

Symbiosis

While not known for any specific symbiotic relationships, brittle stars in general play a role in the aquarium's cleanup crew, helping to maintain a healthy environment by consuming organic waste.

Habitat

In the wild, Banded Brittle Stars are typically found in reef environments, often associated with coral rubble, seagrass beds, and under rocks. They prefer areas with moderate to low water flow and can be found at various depths, often in the shallower parts of the reef.