夏秋季慎防鱼类患黑点病病鱼身体消瘦，体表及鳍条、鳃盖、下颚等部位布满黑点，手摸有粗糙感，严重时，可引起鱼体弯曲，甚至脊椎骨变弯。主要危害草、鲢、鳊等鱼苗鱼种，长江流域都有发现，夏秋季均有流行。防治技术：①每６６７平方米用生石灰１０公斤，杀灭椎实螺；②... Summer and autumn to prevent fish disease black spots sick fish body weight loss, body surface and the fin, gill cover, jaw and other parts covered with black spots, hand touch with a sense of roughness, serious, can cause fish to bend, and even vertebra bend. The main hazards of grass, silver carp, bighead carp and other fish species, found in the Yangtze River Basin, summer and autumn are popular. Prevention and treatment of technology: ① every 667 square meters with lime 10 kilograms, kill spines; ② ...