一、赤皮病 此病多是因拉网或运输中操作不慎使皮肤受伤,细菌侵入鱼体引起的。以春末秋初较为常见,常与烂鳃、肠炎并发。全国养鱼区均有发生,危害草鱼较普遍。症状:鱼体表局部或大部分充血、发炎、鳞片脱落,尤以鱼种两侧和腹部最明显。重者 First, the red-skin disease The disease is mostly due to pulling the net or transport inadvertently skin injury, bacteria invade the fish caused. Spring to early autumn is more common, often with rotten gill, enteritis complicated. National fish farming areas have occurred, the harm of grass carp more common. Symptoms: partial or most fish body congestion, inflammation, scales off, especially on both sides of the fish species and the most obvious abdomen. Severe