Glaucostegus obtusus, commonly known as the whitespotted bamboo shark, is a species of shark belonging to the family Glaucostegidae. This shark is characterized by its distinctive appearance and unique habits, making it a fascinating subject of study for marine biologists and enthusiasts alike.
Description & Characteristics
Glaucostegus obtusus is a relatively small shark, reaching a maximum size of 93.0 cm. Its body is slender and elongated, with a flattened head and a blunt snout. The shark’s coloration is typically a pale gray or brown, often adorned with numerous white spots, giving it its common name. Its fins are rounded and broad, and its tail is relatively short.
Habitat and Occurrence
Glaucostegus obtusus is a demersal shark, meaning it primarily inhabits the bottom of the ocean floor. Its preferred habitat includes sandy and muddy bottoms, coral reefs, and seagrass beds. The species has a wide geographical distribution, found throughout the Indo-Pacific region. This includes the coastal waters of Australia, Indonesia, Malaysia, the Philippines, and several other countries. Glaucostegus obtusus can be observed at depths ranging from the shallow intertidal zone to around 100 meters, making it a versatile inhabitant of various marine ecosystems.
Taxonomy
Glaucostegus obtusus is classified within the Class: Elasmobranchii, Order: Rhinopristiformes, and Family: Glaucostegidae. This family, containing only the genus Glaucostegus, is characterized by its unique physical characteristics and evolutionary lineage, distinguishing it from other shark families.
Feeding
Glaucostegus obtusus is a carnivorous shark that primarily feeds on small invertebrates, such as crustaceans and mollusks. They use their sharp teeth to crush the shells of their prey, obtaining nourishment from the soft tissues within. The shark’s diet can also include small fish and other marine organisms, depending on availability and habitat.
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