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虹鳟鱼因其成体沿侧线具有一棕红色纵纹,如同彩虹一样而得名。虹鳟鱼具有肉味鲜美、营养丰富、刺少肉多、人工繁殖简便等特点,目前已成为联合国粮农组织向世界推广的优良四大淡水养殖品种之一,被列为高档鱼。大面积实践证明,在流水中饲养,每亩产鲜鱼3～3.5万公斤,经济效益极为显著。因此,积极发展虹鳟鱼人工养殖,前景诱人。北京怀柔、甘肃榆中等地,均养殖成功。
Rainbow trout has a reddish-red longitudinal stripe along its lateral line and is named after a rainbow. Rainbow trout has the characteristics of delicious meat, rich nutrition, less spiny meat and easy artificial propagation. Now it has become one of the four fine freshwater aquaculture varieties popularized by the UN Food and Agriculture Organization to the world and is classified as high-grade fish. Large area of practice has proved that keeping in running water, per mu of fresh fish 3 to 35,000 kg, the economic efficiency is extremely significant. Therefore, the active development of rainbow trout breeding, attractive prospects. Beijing Huairou, Gansu Yuzhong and other places, are breeding success.