在缺乏先进设备的条件下,怎样因陋就简,正确判断鱼病呢?笔者就实践中如何用肉眼诊断鱼病介绍一些基本方法:一、鱼池观察凡养鱼池、鱼塘中发生鱼病,均会出现鱼不摄食或食量减少,有鱼离群在水边或水面独游,行动迟缓的先期预兆。二、体表检查出血病:鱼体色发黑微带红色,眼眶四周、 In the absence of advanced equipment conditions, how simple, correct judgment of fish disease? The author on how to use the naked eye diagnosis of fish disease to introduce some basic methods: First, the fish pond observation Where the fish ponds, fish ponds in fish disease, will The emergence of fish do not eat or reduce the amount of food, fish out alone in the water or the water alone, slow signs of early warning. Second, the body surface examination bleeding: fish body color black and red, eyes around,