Tokyo's Toyosu fish market, which opened in 2018 to replace the aging Tsukiji market, is facing tough times with both trade volume and prices of high-end fish and other marine products tumbling as demand collapses amid the coronavirus pandemic.The wholesale market is famous for its tuna auctions, but trade in the fish has roughly halved in volume from a year earlier amid sharp declines in the number of customers at restaurants, especially foreign tourists, according to the operator.Most of the seafood at the Toyosu market is snapped up by professional buyers supplying customers such as upsc…READ FULL ARTICLE