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虹鳟鱼属冷水性鱼类,它的生长温度在5～20℃之间,最适生长温度在14～18℃之间,通常生活在沿海和东北比较寒冷的地区。近几年来,通过移植、驯化,在内陆温暖地区水温较低的泉水、山涧溪流、地下水、深水水库底排水等也可以用来养殖虹鳟鱼。1999年鸭河口水库渔场利用水库坝基渗水养殖虹鳟
Rainbow trout is a cold-water fish whose growth temperature is between 5 and 20 degrees Celsius and its optimum growth temperature is between 14 and 18 degrees Celsius. It usually lives in the colder coasts and northeastern regions. In recent years, rainbow trout can also be used for breeding rainbow water trout by transplanting and domesticating spring water, mountain streams, groundwater and bottom drains in deep-water reservoirs, which have lower water temperatures in inland areas. In 1999 duck mouth estuary reservoir fishery using rainbow dam water seepage