The Sand Sifting Starfish, Indo-pacific Comb Starfish, scientifically known as Astropecten polyacanthus, is a fascinating marine creature found throughout the Indo-Pacific region. This starfish is a common sight in various marine ecosystems, showcasing its adaptability and resilience in diverse environments.
Description & Characteristics
The Astropecten polyacanthus is a relatively large starfish, with individuals reaching a maximum size of around 20 centimeters in diameter. The starfish’s body is characterized by a distinct star shape, with five arms radiating from a central disc. Its dorsal surface, or upper side, is typically covered in numerous small, spiky granules, giving it a rough texture. The starfish’s color can vary, ranging from pale brown to reddish-brown.
Habitat and Occurrence
The Sand Sifting Starfish, Indo-pacific Comb Starfish, Astropecten polyacanthus, thrives in a variety of habitats, but it is most commonly found in sandy or muddy bottoms. It inhabits the Indo-Pacific region, ranging from the Red Sea and the Eastern coast of Africa to the Pacific Ocean. It is particularly prevalent in the intertidal zone and the continental shelf, favoring depths between 0 and 200 meters. This starfish’s adaptability allows it to thrive in diverse marine zones, from shallow coastal areas to deeper, offshore environments.
Taxonomy
The species Astropecten polyacanthus belongs to the Class: Asteroidea, Order: Paxillosida, and Family: Astropectinidae. These taxonomic classifications highlight the specific characteristics and evolutionary relationships of this starfish within the broader group of echinoderms.
Feeding
The Sand Sifting Starfish, Indo-pacific Comb Starfish, Astropecten polyacanthus, is a versatile feeder with a diet that includes a diverse range of organisms. It primarily relies on a combination of carrion, clams, and detritus, showcasing its ability to adapt to readily available food sources. Astropecten polyacanthus is also known to consume snails and worms, further highlighting its opportunistic feeding behavior. Its ability to scavenge and consume a variety of food types, including decomposing matter, plays a crucial role in maintaining the balance of marine ecosystems.
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