In the summer, bull trout forge 50 miles upstream from Lake Koocanusa to spawn in the Wigwam River drainage in British Columbia.

夏天，鳟鱼从 Koocanusa 湖逆流而上50英里，到不列颠哥伦比亚威格沃姆河的排水系统产卵。

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The Lake Superior National Marine Conservation Area offers unparalleled waters for trout, whitefish, lake herring, and walleye.

苏必利尔湖国家海洋保护区为鳟鱼，白鱼，湖鲱鱼，角膜白斑提供了无与伦比的水域。

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Researchers removed the trout from one lake, and the frog population soon quadrupled.

研究者把一个湖泊的鲑鱼全部捞走，青蛙数量很快翻了四番。

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Trout Lake Ice Rink, used for Olympic athlete training last year, was also converted into a regulation-size NHL hockey rink.

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Freshwater fish from cold waters, like lake herring, lake trout, salmon, and whitefish, are also high in omega-3s.

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Other good fish sources of omega 3 fatty acids include mackerel, lake trout, herring, sardines and albacore tuna.

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