The Pacific Sand Lance, scientifically known as Ammodytes hexapterus, is a slender, streamlined fish commonly found in coastal waters of the North Pacific Ocean. It is a crucial component of the marine ecosystem, playing a significant role in the food chain as both predator and prey.
Description & Characteristics
Ammodytes hexapterus is characterized by its elongated, torpedo-shaped body, reaching a maximum length of 30.0 cm. The fish is typically silvery in color with a slightly darker dorsal region. It possesses a pointed snout and a small mouth with a slightly protruding lower jaw. Its body is covered in small, cycloid scales.
Habitat and Occurrence
The Pacific Sand Lance, Ammodytes hexapterus, exhibits a wide distribution range in the North Pacific Ocean. It is commonly found in nearshore waters, often inhabiting sandy bottoms and estuaries. The species prefers depths ranging from 0.0 to 275.0 meters, making it adaptable to a variety of marine environments. This includes both the neritic and oceanic zones, encompassing coastal waters and the open ocean, highlighting its versatility and importance in marine ecosystems.
Taxonomy
The Pacific Sand Lance, Ammodytes hexapterus, belongs to the Family Ammodytidae, which comprises the sand lances. They are classified within the Order Perciformes, a diverse order of fish including perch, bass, and mackerel. The sand lances fall under the Class Teleostei, which represents the vast majority of bony fishes, encompassing over 20,000 species.
Feeding
The Pacific Sand Lance, Ammodytes hexapterus, is an opportunistic feeder, consuming a wide range of prey items. Its diet consists primarily of zooplankton, including copepods, amphipods, and krill. It also feeds on small fish, fish eggs, and larvae, highlighting its role as a significant predator in the marine environment. Additionally, its diet includes other invertebrates like snails and worms, as well as phytoplankton, showcasing its adaptability and contribution to the intricate food web. Ammodytes hexapterus, in turn, is preyed upon by larger fish, birds, and marine mammals, further emphasizing its importance in the marine ecosystem.
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