鱼类在不同的生活阶段,对周围的环境有不同的要求,生理上也有不同的变化。摸清它们互相之间的关系,就可以找出指标性因子,以判断鱼群集中的位置,群体的大小,渔期长短,渔汛的提前、推迟及结束,对生产起指导作用。由于鱼的种类不同,予报中的指标性因子亦有差异,因此找出某种鱼在不同生活 Fish in different stages of life, the surrounding environment have different requirements, there are different physiological changes. Find out their relationship with each other, we can find the index of factors to determine the location of fish stocks, the size of the group, the length of fishing, fishing ahead of schedule, postponed and ended, play a guiding role in the production. Due to the different types of fish, the reported index of the factors are also different, so find out some fish in different life