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The common starfish, common sea star or sugar starfish (Asterias rubens) is the most common and familiar starfish in the north-east Atlantic. Belonging to the family Asteriidae , it has five arms and usually grows to between 10–30 cm across, although larger specimens (up to 52 cm across) are known.
Asterias is a genus of the Asteriidae family of sea stars.It includes several of the best-known species of sea stars, including the common starfish, Asterias rubens, and the northern Pacific seastar, Asterias amurensis.
It is commonly referred to as the carrion plant, starfish flower, giant toad plant, or starfish cactus, although it is not related to cacti at all. [3] This " carrion plant " nickname can also refer to similar Stapelia species as well as members of related genera, including Stapelia gigantea and Orbea variegata .
It rakes together heaps of sediment and then turns its cardiac stomach inside out and engulfs the mass. Edible sponge species are chosen in preference to other prey and tend to be eliminated from areas where the starfish abound. [4] The sexes are separate in the red cushion star.
Asterias amurensis, also known as the Northern Pacific seastar and Japanese common starfish, is a seastar found in shallow seas and estuaries, native to the coasts of northern China, Korea, far eastern Russia, Japan, Alaska, the Aleutian Islands and British Columbia in Canada.
Patiria miniata, the bat star, sea bat, webbed star, or broad-disk star, is a species of sea star (also called a starfish) in the family Asterinidae. It typically has five arms, with the center disk of the animal being much wider than the stubby arms are in length. [2] Although the bat star usually has five arms, it sometimes has as many as ...
A marine parasite expert stated that the starfish was an important member of the marine community and that if it were removed, marine biodiversity in the area would be threatened. [ 5 ] In a study published in 2013, Ochitophrya stellarum, the parasitic ciliate, was discovered in 2007 in the tissues of blue crabs.
Culcita novaeguineae (common name, cushion star) is a species of starfish. It has short arms and an inflated appearance and resembles a pentagonal pincushion . It is variable in colour and can be found in tropical warm waters in the Indo-Pacific .