水体是鱼类生存的“空气”。近年来因水体遭受污染(如溶氧超标、金属超标、水体缺氧等)而使鱼类发生“毒水症”,造成大批死亡。防治鱼类水体“毒水症”可采用如下方法诊断和救护。 Water is the “air” of fish. In recent years, due to water pollution (such as excessive dissolved oxygen, excessive metal, water, oxygen and so on) and fish “poisoning”, resulting in a large number of deaths. Prevention and treatment of fish water “toxic disease” can be diagnosed and rescued by the following methods.