Major Japanese trade houses, led by Marubeni Corp., have been pushing for the land-based farming of salmon, a popular type of sushi and sashimi, in Japan, as supply from Norway is starting to peak. In October, Marubeni started selling salmon to supermarkets and fishmongers that was farmed by its Norwegian partner, Proximar Seafood AS, at a plant in Oyama, Shizuoka Prefecture near Mt. Fuji. Under an exclusive distribution agreement Marubeni signed with Proximar in 2022, the trading house plans to ship 4,700 tons by 2025 and raise the figure to 5,300 tons by 2027, when the plant becomes fully op…