由于养鱼业的迅猛发展,鱼类从适宜其生长的天然环境进入鱼类高密度聚集的人工养殖环境,鱼类的生长环境发生了巨大变化,相继出现了各种各样的疾病。随着人民生活水平的提高,“食有鱼”已经是平日里普通的事了,人们对鱼产品的需求已由“食有鱼”向绿色、无污染、优质安全的水产品 Due to the rapid development of the fish farming industry, fish have changed dramatically from the natural habitats suitable for their growth to the high-density fish culture environment, and various diseases have emerged. With the improvement of people’s living standards, “eating fish” is already an ordinary thing in ordinary times. People’s demand for fish products has shifted from “eating fish” to green, pollution-free, quality and safe aquatic products