Common name: Red Comb Starfish

Scientific name: Astropecten aranciacus (Linnaeus, 1758)

General Information

The Red Comb Starfish, scientifically known as Astropecten aranciacus, is a fascinating species of sea star found primarily in the Mediterranean Sea and the eastern Atlantic Ocean. Known for its distinctive orange to reddish coloration and comb-like spines along its arms, this species adds a unique touch to marine aquariums. It is not commonly kept in home aquariums due to its specific care requirements and natural habitat preferences.

While not a staple in the pet trade, the Red Comb Starfish is of interest to marine biologists and hobbyists who specialize in echinoderms. It plays a role in the ecosystem as a predator of bivalves and other small invertebrates, thus contributing to the ecological balance of its natural habitat.

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
Difficult Sensitive to water quality; best for experienced aquarists
Diet
Carnivore Feeds on bivalves and small invertebrates; can eat chopped seafood
Reefsafe
No Predatory nature poses threat to small invertebrates
Aggression
Peaceful Generally peaceful, but predatory towards small invertebrates
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Echinoderms
    Echinodermata
  3. Class
    Starfish
    Asteroidea
  4. Order
    Sand Stars
    Paxillosida
  5. Family
    Sand Sifting Starfish
    Astropectinidae
  6. Genus
    Sand Sifting Starfish
    Astropecten
  7. Species
    Red Comb Starfish
    Astropecten aranciacus (Linnaeus, 1758)
  8. Synonyms
    Asterias aranciaca Linnaeus, 1758
    Asterias aurantiaca Tiedemann, 1816
    Astropecten antarcticus Studer, 1884
    Astropecten aurantiaca Gray, 1840
    Astropecten crenaster Dujardin & Hupé, 1862
    Astropecten meridionalis Studer, 1876
    Astropecten perarmatus Perrier, 1869
  9. Source: GBIF | Global Biodiversity Information Facility

Care

Caring for the Red Comb Starfish requires attention to its natural environment. It thrives in sandy substrates where it can burrow and hunt for food. Maintaining stable water conditions and a substrate that mimics its natural habitat is crucial for its well-being. This species is sensitive to changes in water quality, making it more suitable for experienced aquarists.

Diet and Feeding

The Red Comb Starfish is a carnivore, primarily feeding on bivalves and small invertebrates. In captivity, it can be fed a diet of chopped seafood, such as shrimp and clams, to mimic its natural diet. Feeding should occur every few days, ensuring that the starfish has time to digest its food properly.

Behavior and Compatibility

This species is generally peaceful and can coexist with other non-aggressive marine species. However, due to its predatory nature, it may pose a threat to small invertebrates in the tank. It is best housed in a species-specific tank or with other larger marine organisms that it cannot prey upon.

Health and Common Issues

The Red Comb Starfish is susceptible to changes in water quality and requires a stable environment to thrive. Regular monitoring of water parameters and maintaining a clean tank are essential to prevent stress and disease. Signs of poor health include loss of color, lethargy, and disintegration of limbs.

Habitat

Naturally found in the sandy and muddy substrates of the Mediterranean Sea and the eastern Atlantic Ocean, the Red Comb Starfish prefers environments where it can easily burrow and hunt for prey. It is typically found at depths ranging from shallow waters to about 200 meters.