The menu for the annual dinner of St. George's Society in Vancouver, British Columbia, featured the fresh catch that the city is known for: boiled salmon with oyster sauce from the Fraser River. The longest river in British Columbia, the Fraser flows 854 miles from the Canadian Rockies into the Strait of Georgia just south of Vancouver. It has long been famous for its salmon sockeye, chinook, chum, coho and pink. But that menu was from 1886, and since then, the salmon has struggled. Recently,