The Japanese amberjack or yellowtail, Seriola quinqueradiata, is a species of jack fish in the family Carangidae, native to the northwest Pacific Ocean.

It is known as shiyu (鰤魚) in China, bang'eo (방어) in Korea, and buri (鰤) or hamachi (魬) in Japan.

They are eaten either cooked or raw and are a seasonal favourite in the colder months when the meat has a higher fat content.

Some of the fish consumed are caught wild, but a substantial amount is farmed (about 120,000 tonnes per year).

To populate the pens, every May, workers fish for the small wild fry (called mojako), which can be found under floating seaweed.