Sushi chain owner Kiyoshi Kimura purchased the 612-pound Pacific bluefin tuna at auction. Conservationists are alarmed about the fate of the species.
pacific bluefin tuna
The long-term agreement would aid fish stocks that have fallen to just 2.6 percent of their historic size. The news comes at a time when Atlantic bluefin populations are also rebounding.
Environmental groups have asked the U.S. to give the prized fish protection under the Endangered Species Act. Some scientists and activists say the chances are slim but the action is long overdue.