Japanese Amberjack

The Japanese Amberjack, widely known by its Japanese name buri or as yellowtail, is a large pelagic fish in the family Carangidae. It belongs to the genus Seriola, a group of fast-swimming, torpedo-shaped jacks found in temperate and subtropical seas. This species is native to the northwestern Pacific, particularly the waters around Japan, Korea, and coastal China, where it undertakes seasonal migrations along the coast. Japanese Amberjack are among the most recognizable large pelagic fish in East Asian waters and are extensively studied for their migratory patterns. The species is not currently considered at risk, maintaining stable wild populations across its native range.

Japanese Amberjack have a streamlined, torpedo-shaped body built for sustained fast swimming.

• Color: metallic blue-green back transitioning to silvery-white belly
• Stripe: a broad yellow lateral stripe runs from snout to tail
• Fins: yellowish tail and fins, giving rise to the "yellowtail" name
• Body shape: elongated, fusiform, with a narrow caudal peduncle
• Size: adults commonly exceed 60 cm and can surpass 1 meter

It can be distinguished from other Seriola by the intensity and continuity of its yellow lateral stripe and its more elongated body compared to the stockier Greater Amberjack.

Japanese Amberjack inhabit temperate coastal and open waters of the northwestern Pacific, primarily around Japan, the Korean Peninsula, and coastal China. They range from nearshore waters to the open sea, typically at depths from the surface down to around 100 meters. The species undertakes strong seasonal migrations, moving northward along the coast in warmer months and southward as waters cool, tracking preferred temperature ranges. Juveniles often associate with drifting seaweed rafts in open water before moving to coastal habitats as they mature, eventually favoring rocky reefs, current lines, and open coastal shelf waters.

Japanese Amberjack are strong, fast-swimming pelagic fish that typically travel in schools, especially as juveniles and subadults, becoming more solitary or loosely grouped with age. They are active predators, feeding on smaller schooling fish, squid, and crustaceans, often chasing prey near the surface or along current edges. The species undertakes well-documented seasonal migrations tied to water temperature, moving between spawning and feeding grounds. Spawning occurs in warmer months in offshore waters, producing pelagic eggs that drift with currents. As a mid-to-upper trophic predator, Japanese Amberjack are an important link between smaller forage fish and larger open-ocean predators.