Common name: red cushion stat

Scientific name: Porania pulvillus (O.F. Müller, 1776)
Close-up detail of the underside of a Pin Cushion Starfish (Culcita novaeguineae) showing small teeth-like spines and nodules; Maui, Hawaii, United States of America

General information

The Red Cushion Sea Star, Porania pulvillus, is a distinctive and attractive species of starfish that is occasionally found in the aquarium trade. It is known for its bright red coloration and cushion-like appearance, which makes it a visually appealing addition to the marine aquarium. This species is not as commonly kept as some other starfish, but it can be a rewarding inhabitant with proper care.

Details

Recommended minimum tank volume
100 liter (26 gallons)
Salinity
S.G. 1.023 to 1.026
Temperature
10 to 25 °C (50 to 77 °F)
Acidity
pH 7.8 to 8.4
Average size
10 cm (4″)
Care level
Moderate to easy Requires stable conditions.
Diet
Carnivore Feeds on detritus and small organisms.
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
    Poraniidae Starfish
    Poraniidae
  6. Genus
    Red Cushion Sea Star
    Porania
  7. Species
    red cushion stat
    Porania pulvillus (O.F. Müller, 1776)
  8. Synonyms
    Asterias pulvillus O.F. Müller, 1776
    Asteropsis pulvillus Müller & Troschel, 1842
    Porania gibbosa Leach in Gray, 1840

Care

Porania pulvillus requires a well-established aquarium with a stable environment. It is important to provide a sandy substrate and ample live rock for grazing, as this species feeds on detritus, small invertebrates, and organic films that develop on surfaces. Care should be taken to ensure that the aquarium does not have aggressive fish or invertebrates that may harm the sea star. Regular water changes and stable water parameters are crucial for the health of this species.

Reproduction

In the wild, Porania pulvillus reproduces by releasing gametes into the water column, where fertilization occurs. In the aquarium, breeding is rare, but with a group of individuals and optimal conditions, spawning may be observed. The larvae are planktonic and go through several developmental stages before settling to the bottom and transforming into juvenile sea stars.

Habitat

The Red Cushion Sea Star is found in the North Atlantic Ocean, from the Arctic down to the North Sea. It prefers colder waters and is typically found at depths ranging from 10 to 1,000 meters. In the aquarium, it is essential to maintain cooler water temperatures that mimic its natural habitat to ensure its well-being.