一、草鱼的烂鳃病一般是由鱼害粘球菌引起的。烂鳃病的主要症状是；解剖观察病鱼的鳃部，明显可见鳃片上有泥灰色、白色或蜡黄色的斑点，鳃片的表面，尤以鳃丝末端粘液很多，并常粘附着淤泥和杂物碎片，有时亦可看到瘀血和斑点沉积在鳃片上。严重患病病鱼的鳃盖片中央，表皮由 First, grass carp gill disease is generally caused by mycelium of fish. The main symptoms of rotten gill disease; anatomy and observation of diseased fish gills, glimpse obvious gills on the gray, white or waxy spots, gill surface, especially in the end of the gill filament mucus, and often attached to the sludge And debris debris, and sometimes also see the blood stasis and spots deposited on the gills. Serious diseased fish gill sheet central, epidermis by