The Swellshark, scientifically known as Cephaloscyllium ventriosum, is a species of catshark belonging to the family Scyliorhinidae. This shark is commonly found in the Pacific Ocean, particularly off the coast of Japan and Korea.
Description & Characteristics
The Cephaloscyllium ventriosum is a relatively small shark, reaching a maximum size of 110.0 cm. Its body is characterized by its slender and elongated shape, with a blunt snout and large, prominent eyes. The coloration of this shark is typically a pale brown, often with darker brown spots and blotches scattered across its body. These markings serve as camouflage, helping the shark blend in with the rocky seafloor.
Habitat and Occurrence
The Cephaloscyllium ventriosum is a demersal shark, meaning it lives on or near the bottom of the ocean floor. Its depth range extends from a shallow 5.0 meters to a considerable depth of 457.0 meters. This makes it a common inhabitant of both the neritic zone, the shallow waters near the coast, and the bathyal zone, the deeper waters beyond the continental shelf. While not limited to specific geographic locations, Cephaloscyllium ventriosum is frequently encountered in the northwest Pacific Ocean, specifically off the coast of Japan and Korea. This distribution reflects its adaptability to varying depths and its preference for rocky and sandy bottom habitats.
Taxonomy
The species Cephaloscyllium ventriosum belongs to the Class: Elasmobranchii, Order: Carcharhiniformes, and Family: Scyliorhinidae. This classification places it within a diverse group of sharks known for their flattened bodies, prominent spiracles, and typically nocturnal habits. The family Scyliorhinidae, also known as the catsharks, is a large and widespread group, characterized by their slender bodies, relatively small mouths, and prominent barbels around the mouth.
Feeding
As a bottom-dwelling shark, the Cephaloscyllium ventriosum is a carnivorous predator with a diet consisting mainly of benthic invertebrates. Its food sources include crabs, fish (especially small ones), shrimps, and snails. These prey items are captured using its keen sense of smell and sharp teeth, which are adapted for crushing and tearing its food.
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