本试验养成体重 14 0 g的硬头鳟鱼种 ,取得了成活率 90 % ,饲料系数 1 1的好成绩。硬头鳟生长快 ,经济效益高 ,是比虹鳟更好的养殖新品种。作者针对国内养殖鳟业的鱼病预防和推广商品饲料问题提出了有益的建议 In this experiment, a hard-headed trout weighing 140 g was obtained and a good result of a 90% survival rate and a feed coefficient of 1 1 was achieved. Hard trout grow fast, high economic efficiency, better than rainbow trout breed new varieties. The author of the domestic farming trout fish disease prevention and promotion of commercial feed issues put forward some useful suggestions