Updated: Over 20,000 metric tons of Norwegian salmon was sold to Vietnam. Who did it remains a mystery

Around 29,000 metric tons of salmon were sent from Norway to Vietnam last year. Most of it – 23,000 metric tons – was sold as whole round fish. But an extensive investigation by IntraFish Media sister publication Fiskeribladet of the full list of companies selling salmon or salmon byproducts into Vietnam last year turned up a familiar refrain: we sold only frames, fish heads and other parts.

Earlier this month, customs officers in China's Guangzhou province said they'd broken up a scheme to smuggle over CNY 600 million (€77.1