Allostichaster capensis is a species of starfish, belonging to the family Stichasteridae. These starfish are a common sight in the intertidal and subtidal zones of the South African coast, often found in rocky areas and kelp forests.
Description & Characteristics
Allostichaster capensis is characterized by its five arms, which are relatively short and stout. The upper surface of the starfish is covered in small, spiny ossicles, giving it a rough texture. The color of Allostichaster capensis can vary, ranging from reddish-brown to purplish-grey. They can grow up to a maximum size of about 15 cm in diameter.
Habitat and Occurrence
Allostichaster capensis is typically found in the intertidal and subtidal zones, making it a prevalent presence in these aquatic ecosystems. They are often found in rocky areas and kelp forests, where they have access to their preferred food sources. This starfish is endemic to the South African coast, with a distribution ranging from the Cape Peninsula to the Eastern Cape.
Taxonomy
Allostichaster capensis belongs to the Class Asteroidea, the class of starfish, within the Order Forcipulatida. This order encompasses starfish that are typically found in cold waters and have pincers on their arms. The species is classified within the Family Stichasteridae, which includes a diverse group of starfish with a wide distribution in the Southern Hemisphere.
Feeding
Allostichaster capensis is a carnivorous starfish that feeds primarily on mussels, barnacles, and other invertebrates. They use their tube feet to pry open their prey, and then their stomach everts out of their mouths to digest the food.
Image References