| Pentaster | |
|---|---|
 | |
| Pentaster obtusatus | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Asteroidea |
| Order: | Valvatida |
| Family: | Oreasteridae |
| Genus: | Pentaster Döderlein, 1935 [1] |
| Species | |
See text. | |
Pentaster is a genus of sea stars in the family Oreasteridae. It is also known as the Blunt Arm Sea Star. [2]
List of species according to the World Register of Marine Species: [1]
Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea. Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish are also known as Asteroids due to being in the class Asteroidea. About 1,500 species of starfish occur on the seabed in all the world's oceans, from the tropics to frigid polar waters. They are found from the intertidal zone down to abyssal depths, 6,000 m (20,000 ft) below the surface.
Goniasteridae constitute the largest family of sea stars, included in the order Valvatida. They are mostly deep-dwelling species, but the family also include several colorful shallow tropical species.
The Notomyotida are an order of sea stars containing at least 75 species in eight genera of the monotypic family, Benthopectinidae.
The Oreasteridae are a family of sea stars in the class Asteroidea.
Protoreaster is a genus of sea stars in the family Oreasteridae from the Indo-Pacific. They are sometimes seen in the marine aquarium trade.
Anthenea is a genus of sea stars in the family Oreasteridae.
Goniodiscaster is a genus of sea stars in the family Oreasteridae.
Anthaster valvulatus is a species of sea stars in the family Orestieridae. It is the sole species in the genus Anthaster. While its common name is the brick red seastar, individuals also occur in purple, orange and multicoloured combinations of these colours.
Pentaceraster is a genus of sea stars in the family Oreasteridae.
Monachaster sanderi is a species of sea stars in the family Oreasteridae. It is the sole species in the genus Monachaster.
Pseudanthenea grayi is a species of sea stars in the family Orestieridae. It is the sole species in the genus Pseudanthenea.
Poraster superbus is a species of sea stars in the family Oreasteridae. It is the sole species in the genus Poraster.
Gymnanthenea is a genus of sea stars in the family Oreasteridae.
Bothriaster primigenius is a species of sea stars in the family Orestieridae. It is the sole species in the genus Bothriaster.
Luidia is a genus of starfish in the family Luidiidae in which it is the only genus. Species of the family have a cosmopolitan distribution.
Astropecten irregularis is a sea star of the family Astropectinidae. Common names include Sand sea star.
The spiny sand seastar is a species of starfish in the family Luidiidae. It is found in shallow parts of the China Sea and in the vicinity of the Korean archipelago. The tissues of this starfish have been found to contain several secondary metabolites with medicinal potential.
Luidia australiae, the southern sand star, is a species of starfish in the family Luidiidae. It is found in the Pacific Ocean around Australia and New Zealand.
The Freyellidae are a family of deep-sea-dwelling starfish. It is one of two families in the order Brisingida. The majority of species in this family are found in Antarctic waters and near Australia. Other species have been found near New Zealand and the United States.
Austrofromia is a genus of starfish belonging to the family Ophidiasteridae.
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