Common name: Brittle Star

Scientific name: Ophiocoma scolopendrina (Lamarck, 1816)
Sea spongered sea sponge with brittle starfish, underwater
Sea sponge with brittle starfish , underwater

General information

The Brittle Star, scientifically known as Ophiocoma scolopendrina, is a species of echinoderm that is popular among reef aquarium enthusiasts for its scavenging abilities and unique appearance. These invertebrates have a central disc and long, flexible arms that allow them to move swiftly across the substrate. They are nocturnal creatures, often hiding during the day and emerging at night to feed.

Details

Recommended minimum tank volume
75 liter (20 gallons)
Salinity
S.G. 1.023 to 1.026
Temperature
22 to 26 °C (72 to 79 °F)
Acidity
pH 7.8 to 8.4
Average size
20 cm (8″)
Care level
Moderate to easy Needs plenty of hiding spots
Diet
Omnivore Scavenges for detritus & small organisms
Reefsafe
Yes
Aggression
Peaceful
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Echinoderms
    Echinodermata
  3. Class
    Brittle Stars
    Ophiuroidea
  4. Order
    Brittle Stars
    Ophiurida
  5. Family
    Brittle Stars
    Ophiocomidae
  6. Genus
    Brittle Stars
    Ophiocoma
  7. Species
    Brittle Star
    Ophiocoma scolopendrina (Lamarck, 1816)
  8. Synonyms
    Ophiocoma alternans von Martens, 1870
    Ophiocoma lubrica Koehler, 1898
    Ophiocoma molaris Lyman, 1862
    Ophiocoma variabilis Grube, 1857
    Ophiura scolopendrina Lamarck, 1816

Care

Brittle Stars are relatively easy to care for, requiring a well-established aquarium with plenty of live rock and a sandy substrate to mimic their natural habitat. They are detritivores, feeding on decaying matter and leftover food, which helps keep the tank clean. However, they should not be relied upon as the sole means of tank maintenance.

Reproduction

In the wild, Brittle Stars reproduce both sexually and asexually. In the aquarium, they are more likely to reproduce through fragmentation, where a part of an arm detaches and regenerates into a new individual. This can be an interesting process to observe in a home aquarium.

Symbiosis

While not known for any specific symbiotic relationships in the same way as clownfish and anemones, Brittle Stars can coexist with a variety of tank mates. They are generally peaceful and can be part of a diverse cleanup crew in a reef tank.

Habitat

Ophiocoma scolopendrina is found in a range of marine environments, from shallow coral reefs to deeper waters. They prefer areas with plenty of hiding places and a stable environment. In the aquarium, they can adapt to various depths as long as their basic needs are met.