到外地鱼种场购买鱼种，在运输过程中，往往会因为种种原因而出现鱼种死亡，既造成了经济损失，又耽误了放养时间。　　如何才能使鱼种在运输时不会发生死亡呢？必须把好五关：　　一、鱼种质量关。要挑选体质健壮、无病无伤的鱼种，不要贪图便宜，购买污染的、生病的鱼种，也 To buy fish species from overseas fish farms, during the transportation process, the fish species often die for various reasons, which not only causes economic losses but also delays the stocking time. How to make the fish species will not happen in the transport of death? Must be a good five off: First, the quality of fish species. Choose healthy, disease-free and harmless species, do not seek cheap, buy contaminated, sick species, also