Common name: purple seastar

Scientific name: Ophidiaster ophidianus (Lamarck, 1816)
Red Mediterranean Seastar – Ophidiaster ophidianusPurple sea star (Ophidiaster ophidianus starfish) underwater photo in Mediterranean Sea

General information

The Red Sea Star, Ophidiaster ophidianus, is a striking marine invertebrate known for its vibrant red coloration and five long, slender arms. This species is a part of the Ophidiasteridae family and is often sought after by reef aquarium enthusiasts for its beauty and the role it plays in the ecosystem.

Details

Recommended minimum tank volume
200 liter (53 gallons)
Salinity
S.G. 1.023 to 1.026
Temperature
22 to 26 °C (72 to 79 °F)
Acidity
pH 8 to 8.4
Average size
30 cm (1′)
Care level
Moderate to easy
Diet
Omnivore
Reefsafe
Yes
Aggression
Peaceful
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Echinoderms
    Echinodermata
  3. Class
    Starfish
    Asteroidea
  4. Order
    Starfish
    Valvatida
  5. Family
    Ophidiasteridae Starfish
    Ophidiasteridae
  6. Genus
    Red Knob Sea Star
    Ophidiaster
  7. Species
    purple seastar
    Ophidiaster ophidianus (Lamarck, 1816)
  8. Synonyms
    Asterias ophidiana de Lamarck, 1816
    Ophidiaster aurantius Gray, 1840
    Ophidiaster canariensis Greeff, 1872

Care

Ophidiaster ophidianus requires a well-established reef tank with plenty of live rock and a sandy substrate to mimic its natural habitat. It is sensitive to water quality and requires stable conditions with low nitrate levels. The Red Sea Star is an omnivore and benefits from a varied diet including detritus, small invertebrates, and meaty foods.

Reproduction

Sea stars, including Ophidiaster ophidianus, have the ability to regenerate lost limbs, which is a form of asexual reproduction. In the wild, they also reproduce sexually by releasing gametes into the water column. In captivity, breeding is less common, but with optimal conditions, it is possible to observe spawning behavior.

Symbiosis

While not known for any specific symbiotic relationships, sea stars play a crucial role in the reef ecosystem by helping to control algae growth and providing a balance to the food web.

Habitat

Ophidiaster ophidianus is found in the Red Sea and the Western Indian Ocean. It prefers shallow waters and is often seen on coral reefs, where it can blend in with its surroundings and find ample food sources.