鱼类学研究和垂钓实践证明,鱼类喜欢在温度适宜、溶氧充足,水位稳定、食物较多,以及有适量水草和弱光的环境下生活。但是江、河、湖、水库等自然水域中,由于受气候变化,降水量多少和农田灌溉用水诸因素的制约,水位经常涨落,对鱼类生活产生一定的影响。湖库储水不足,导致在农作 Ichthyological studies and fishing practices have proved that fish prefer to live under suitable temperature, adequate dissolved oxygen, stable water level, more food, and adequate watering and low light conditions. However, in natural waters such as rivers, lakes and reservoirs, the water level fluctuates frequently due to the change of climate, the amount of precipitation and irrigation water in farmland, affecting the life of fish. Lake reservoir lack of water, leading to farming