Mixed Strain
Mixed strain Japanese amberjack refers to Seriola quinqueradiata from blended broodstock lines rather than a named hatchery or research strain. The species is a fast-swimming western North Pacific jack known in seafood markets as buri, hamachi, or yellowtail, depending on size and context. Typical fish are streamlined, blue-green to gray above, silvery below, and marked by a yellow stripe along the body.
In aquaculture, mixed-strain lots may be used to maintain growth, survival, or genetic diversity, but they need the same marine production conditions as any Japanese amberjack: high-oxygen water, strong swimming space, careful grading, and protein-rich feeds. Public aquariums house them only in large pelagic tanks. Hatcheries and farms track strain background because it can affect performance, harvest timing, and biosecurity decisions.
Colors: Albino, Black, Blue, Brown, Gold, Gray, Green, Leucistic, Melanistic, Mottled, Orange, Piebald, Red, Silver, Spotted, Striped, White, Wild Type, Yellow
