Sebastes viviparus, commonly known as the viviparous rockfish, is a species of marine ray-finned fish belonging to the family Sebastidae. It is found in the northeastern Pacific Ocean, inhabiting depths ranging from 50 to 300 meters. These fish are known for their unique reproductive strategy, giving birth to live young, a characteristic that sets them apart from most other fish species.
Description & Characteristics
Sebastes viviparus can reach a maximum size of 66.5 centimeters. They possess elongated bodies with a distinctive, slightly compressed shape. Their dorsal fin is continuous, featuring a prominent spine followed by soft rays. Their caudal fin is typically truncate or slightly rounded. The coloration of Sebastes viviparus can vary, but it generally displays a reddish-brown hue with darker blotches and markings.
Habitat and Occurrence
Sebastes viviparus is primarily found in the northeastern Pacific Ocean, inhabiting the continental shelf and slope. They are typically found in areas with rocky or mixed substrates, where they can find suitable shelter and forage for prey. This species is commonly found in the bathyal zone, which lies between the continental shelf and the abyssal zone, extending from depths of 200 to 3,000 meters. This depth range is characteristic of the environment where Sebastes viviparus thrives, highlighting its adaptability to the challenging conditions of the deep ocean.
Taxonomy
Sebastes viviparus is classified within the Class Teleostei, the most diverse group of bony fishes, known for their advanced characteristics. This class encompasses a wide array of fish species, including those adapted to diverse habitats and environments. Within this class, Sebastes viviparus belongs to the Order Perciformes, one of the largest and most diverse orders of fishes, characterized by their spiny fins. This order encompasses a vast range of fish species, many of which are commercially valuable and important to the marine ecosystem. Finally, Sebastes viviparus is classified within the Family Sebastidae, a group of fish commonly known as rockfishes. This family encompasses a variety of fish species, distinguished by their generally robust bodies and well-developed spines.
Feeding
Sebastes viviparus is a carnivorous fish with a diet primarily consisting of smaller fish, crustaceans, and other invertebrates. They are opportunistic feeders, adapting their diet based on the availability of prey in their habitat. Their strong jaws and sharp teeth are well-suited for capturing and consuming a variety of prey items.
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