Common name: Sponge brittle star

Scientific name: Ophiothrix suensoni Lütken, 1856

General information

Suenson's Brittle Star, scientifically known as Ophiothrix suensoni, is a colorful and active echinoderm that is popular among reef aquarium enthusiasts. This species is known for its long, slender arms and vibrant coloration, which can range from red to orange, with contrasting white or yellow bands. They are nocturnal creatures that usually hide during the day and become more active at night when they search for food.

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
10 cm (4″)
Care level
Moderate to easy Needs stable conditions & detritus
Diet
Detritivore Feeds on detritus and 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
    Ophiotrichidae
  6. Genus
    Brittle Stars
    Ophiothrix
  7. Species
    Sponge brittle star
    Ophiothrix suensoni Lütken, 1856

Care

Ophiothrix suensoni requires a well-established aquarium with plenty of live rock and a sandy substrate to mimic their natural habitat. They are scavengers that will feed on detritus, uneaten food, and small organisms within the aquarium. It's important to ensure that the tank is free of aggressive fish that may harm these brittle stars. They are sensitive to changes in water quality, so maintaining stable conditions is crucial for their well-being.

Reproduction

In the wild, Suenson's Brittle Stars reproduce by releasing eggs and sperm into the water column, where fertilization occurs externally. In the aquarium, breeding is less common but can occur if conditions are ideal. The larvae are planktonic and will settle to the bottom of the tank as they mature.

Symbiosis

While not known for any specific symbiotic relationships, brittle stars in general play a role in the cleanup crew of a reef tank, helping to maintain a clean and healthy environment by consuming organic waste.

Habitat

Ophiothrix suensoni is found in the Caribbean Sea and the Gulf of Mexico, typically dwelling in coral reefs, seagrass beds, and among sponges. They prefer areas with moderate to strong water currents, which aid in their feeding.