The Blue Runner, also known as Bluestripe Jack, Black Jack, Horse Mackerel, and Yellow Mackerel, is a species of marine fish belonging to the genus Caranx. Scientifically classified as Caranx crysos, this fish is widely distributed throughout the tropical and subtropical regions of the world.
Description & Characteristics
The Blue Runner, Caranx crysos, is a relatively large fish, reaching a maximum size of 70.0 cm in length. It possesses a distinctive body shape, characterized by a deep, compressed body with a slightly pointed head. This species is readily recognized by its vibrant coloration, featuring a blue-green back, silvery sides, and a yellow belly. Its name, “Blue Runner”, aptly describes its coloration. Striking black stripes often adorn the body of the Blue Runner, which further contribute to its unique appearance.
Habitat and Occurrence
The Blue Runner, Caranx crysos, is a highly adaptable species, found in a wide range of marine habitats. It is commonly encountered in coastal waters, as well as in the open ocean. This species can be found at depths ranging from 0.0 to 100.0 meters, making it a versatile inhabitant of both shallow and deeper waters. The Blue Runner is known to inhabit a variety of marine zones, including reefs, lagoons, and estuaries. It is particularly prevalent in the tropical and subtropical regions of the Atlantic, Pacific, and Indian Oceans.
Taxonomy
The species Caranx crysos belongs to the Class: Teleostei, Order: Carangiformes, and Family: Carangidae. The Carangidae family, commonly known as the jack family, encompasses a diverse group of marine fishes characterized by their streamlined bodies and predatory lifestyles.
Feeding
The Blue Runner, Caranx crysos, is a voracious predator. Its diet primarily consists of smaller fish, crustaceans, and invertebrates, making it a significant component of the food chain. Specific prey items include copepods, crabs, crustaceans, fish (little fishes), hydrozoa polyps, jellyfish, lobster, rock lobster, rock shrimps, and shrimps. This species is known to be predatory, actively hunting and pursuing its prey.
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