Common name: Arctic Cushion Star

General Information

The Arctic Cushion Star, scientifically known as Hippasteria phrygiana, is a captivating species of sea star found in cold and temperate waters. Its unique appearance, characterized by a robust body and distinctive, webbed arms, makes it a fascinating addition to cold-water marine aquariums. This species is not commonly found in the pet trade, but its intriguing morphology and behavior have piqued the interest of marine enthusiasts.

The Arctic Cushion Star is primarily found in the North Atlantic and Arctic Oceans, extending into the North Pacific. It inhabits deep-sea environments, often residing at depths ranging from 200 to over 2000 meters. This species is known for its ability to thrive in cold, nutrient-rich waters, making it an interesting subject for study in marine biology.

Care

Caring for a Arctic Cushion Star requires a specialized setup that mimics its natural deep-sea habitat. This includes maintaining cold water temperatures and ensuring high water quality. Due to its deep-sea origins, it is crucial to provide an environment with low light levels and stable conditions.

The Arctic Cushion Star is not typically recommended for beginner aquarists due to its specific care requirements and the challenges associated with replicating its natural habitat in a home aquarium.

Diet and Feeding

In the wild, Hippasteria phrygiana is a carnivorous species, preying on a variety of invertebrates. In captivity, its diet should consist of meaty foods such as shrimp, clams, and other marine invertebrates. Feeding should be done sparingly, as this species is adapted to environments where food is not always abundant.

Behavior and Compatibility

The Arctic Cushion Star is generally peaceful and can coexist with other non-aggressive marine species. However, due to its carnivorous nature, it may pose a threat to small invertebrates and should be housed with caution in a community tank.

Health and Common Issues

Maintaining stable, cold water conditions is essential for the health of the Arctic Cushion Star. Fluctuations in temperature or water quality can lead to stress and health issues. Regular monitoring and maintenance of the aquarium environment are crucial to prevent common ailments.

Habitat

Hippasteria phrygiana is naturally found in cold, deep-sea environments, often associated with rocky substrates and rich in nutrients. Its distribution includes the North Atlantic, Arctic, and North Pacific Oceans, where it thrives in the dark, cold waters.

Conservation Status

Currently, there are no significant conservation concerns for the Arctic Cushion Star. However, like many deep-sea species, it could be affected by changes in oceanic conditions and human activities such as deep-sea trawling.