大麻哈鱼属硬骨鱼纲、鲑形目、鲑科。地方名大马哈鱼。属名贵经济鱼类,肉质细腻味美,脂肪含量极丰富,营养价值极高。在众多大麻哈鱼家族中,有一种与众不同的幼鱼。其中一类被称为“降海型”的生态群体,不像其他大麻哈鱼那样在当年春季进行降海洄游,而是在淡水河流中生活一年后于第二年春季开始降海洄游;而另一类被称为“陆封型”的群体虽数量很少,约占整个群体的10%,他们终生不降海,在淡水中生长两年可性成熟,等待 Salmon is a bony fish, salmon-shaped head, salmonidae. Local name salmon. Is a precious economic fish, meat, delicate and delicate, extremely rich in fat, high nutritional value. Among the many salmon family, there is a distinctive juvenile. One of the groups, known as the “sea-lowering” ecosystem, did not migrate to the sea in the spring of the year, unlike other saltwater fish, but instead started to descend the sea the following year after living in the Tamsui River Migratory; and the other is known as “landfill ” although a small number of groups, accounting for about 10% of the entire population, they do not descend sea life, growth in freshwater for two years sexual maturity, waiting