Common name: icon star

Scientific name: Iconaster longimanus (Möbius, 1859)
A Double Sea Star (Iconaster longimanus)Icon Double Sea Star (Iconaster longimanus)
Icon Double Sea Star (Iconaster longimanus)Icon Double Sea Star (Iconaster longimanus)

General information

The Icon Star, scientifically known as Iconaster longimanus, is a striking sea star species recognized for its unique coloration and horn-like spines. It is often admired for its beauty and is a sought-after species for marine aquarium enthusiasts. The Icon Star has a distinctive appearance with its deep red to burgundy color, accented by lighter spots, and long, tapering arms that can reach impressive lengths.

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 8.1 to 8.4
Average size
30 cm (1′)
Care level
Moderate to easy Sensitive to water quality.
Diet
Carnivore Feeds on small invertebrates.
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
    Sea Stars
    Goniasteridae
  6. Genus
    Icon Sea Star
    Iconaster
  7. Species
    icon star
    Iconaster longimanus (Möbius, 1859)
  8. Synonyms
    Archaster lucifer Valenciennes in Perrier, 1875
    Astrogonium longimanus Möbius, 1859
    Astrogonium souleyeti Dujardin & Hupé, 1862
    Dorigona longimana (Möbius, 1859)
    Goniaster longimanus (Möbius, 1859)
    Pentagonaster longimanus (Möbius, 1859)

Care

Caring for Iconaster longimanus requires a well-established aquarium with stable water conditions. They are sensitive to changes in water quality and require a tank with plenty of live rock and a sandy substrate to forage on. It's important to provide a varied diet that includes meaty foods such as shrimp, squid, and clams. Overfeeding should be avoided to maintain optimal water quality.

Reproduction

Reproduction in Iconaster longimanus is not well documented in home aquariums. In the wild, they reproduce by releasing gametes into the water column, where fertilization occurs externally. Hobbyists should be aware that breeding these sea stars in captivity is challenging and rarely observed.

Symbiosis

While not known for any specific symbiotic relationships, Iconaster longimanus can coexist with a variety of reef inhabitants if provided with the right conditions. They should be kept with caution around small, sessile invertebrates, as they may prey on them.

Habitat

Iconaster longimanus is found in the Indo-Pacific region, typically in coral reef environments. They prefer areas with strong water movement and are often observed at depths ranging from the reef crest down to the reef slope.