冬季,鱼类投喂已经停止,大规格鱼类均已捕捞上市。养殖户经一年辛劳,误认为已经到了渔业休闲季节,容易放松日常管理和鱼病防治。其实,加强冬季鱼病防治十分重要,必须引起重视,以防损失。1.常见鱼病(1)小瓜虫病(又称白点病)由多子小瓜虫寄生感染引起。多子小瓜虫身体柔软可塑,一 In winter, fish feeding has stopped and large-size fish have been caught on the market. Farmers after hard work for a year, mistakenly believe that it has reached the fishing leisure season, easy to relax the daily management and prevention and treatment of fish diseases. In fact, it is very important to strengthen the prevention and control of winter fish diseases and attention must be paid to prevent losses. 1. Common fish disease (1) Small melon disease (also known as white spot disease) caused by parasitic infection of more than a small melon. More child son melon body soft plastic, a