1白头白嘴病1.1病原与症状 病原为粘球菌属一新种,与鱼害粘球菌的形态相似。主要症状:病鱼自吻端至眼球的皮肤变成乳白色,唇似肿胀,张闭失灵,呼吸困难。口周围的皮肤溃烂,有絮状物粘附其上,在池边观察水面游动的病鱼,明显可见“白头白嘴”症状。取出水面观察,症状则不明显。 1 White-headed 白嘴病 1.1 Pathogen and Symptoms The pathogen is a new species of the genus Mycoccus, which is similar in morphology to Mycococcus. The main symptoms: diseased fish from the snout to the eye skin becomes milky, lip-like swelling, Zhang closed failure, breathing difficulties. Oral perioral skin ulceration, there are flocs attached to it, in the pool side observation of swimming fish disease, obviously “white head and white mouth” symptoms. Remove the water to observe the symptoms are not obvious.