草鱼具有生长快肉味佳的特点。但草鱼的抗病力和成活率都比较低,易患出血病、烂鳃病、赤皮病和肠炎病,严重影响草鱼生长,务必引起重视。一、烂鳃病:为鱼害粘球菌所致。病鱼体色发黑,鳃上粘液多,鳃丝腐烂带泥、严重者鳃盖中央表皮腐蚀成一个圆形透明小窗,俗称“开天窗”,鳃组织出血、腐烂和崩溃。鱼因 Grass carp has the characteristics of good fast-growing meat. However, the resistance and survival rate of grass carp are relatively low, susceptible to bleeding, gill disease, red skin disease and enteritis disease, seriously affect the growth of grass carp, be sure to pay attention. First, rotten gill disease: mycotoxin caused by fish. Sick fish body color black, mucus on the gills, gill filaments decay mud, serious operculum central epidermis corroded into a circular transparent small window, commonly known as “open skylight” gill tissue bleeding, decay and collapse. Fish reason