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1 体外鱼病的预防一般采用定期用药遍洒鱼池。漂白粉在细菌性鱼病流行季节，每半月泼洒1次，用量1克/米3。生石灰水每667米2水深1米施生石灰15～20千克，可改良水质，杀灭水中致病菌。硫酸铜和硫酸亚铁合剂预防寄生性鱼病，如鳃隐鞭虫、口丝虫病、斜管虫病、车轮虫病和中华鳋病
1 in vitro prevention of fish diseases generally used regularly spread fish ponds. Bleach in the season of bacterial fish epidemics, spill 1 every half month, the amount of 1 g / m 3. Lime water every 667 meters 2 water depth 1 meter Shi lime 15 to 20 kg, can improve water quality, kill pathogens in water. Copper sulfate and ferrous sulfate mixture to prevent parasitic fish diseases, such as gills whipworm, oral filariasis, oblique tube worm disease, rickettsia and Chinese Wart disease