Atlantic bluefin tuna used to be caught only relatively rarely, mainly by sports fishermen in North America. But this all changed in the 1950s when consumers of sushi, particularly in Japan, developed ...

Fish meat is examined in a lab. Bluefin tuna are worth a lot - up to $3 million for a single fish, to be exact. The large price tag is due, in part, to the fish’s status as an endangered species.

Caught off Honshu’s northernmost tip, the 535-pound bluefin was brought to Toyosu Market’s New Year auction, where Sushi Zanmai owner Kiyoshi Kimura claimed it with the morning’s top bid. Born in ...