硫酸铜有较强的杀灭病原体的能力和收敛作用，常与硫酸亚铁配制成合剂，对多种鱼病特别是寄生虫病有药到病除之功效，且疗程短。但是硫酸铜对鱼类毒性很大，鱼类对硫酸铜、硫酸亚铁合剂的反应比较敏感，特别是鳜鱼的反应最为突出，其次是草鱼、鲢鱼，再次是鲤、鲫、罗非鱼，使 Copper sulfate has a strong ability to kill pathogens and the role of convergence, often with ferrous sulfate formulated as a mixture of a variety of fish diseases, especially parasitic diseases have the effect of medicine to the disease, and the treatment is short. However, copper sulfate is very toxic to fish, and the reaction of fish to copper sulfate and ferrous sulfate is sensitive. In particular, the reaction of anchovy is most prominent, followed by that of grass carp and silver carp, and that of carp, crucian carp, tilapia ,Make