病虾症状青虾患病后,食欲减退,行动迟缓,大多静伏于水边或水草上。因早期鳃部出现红色,后期转为黑色并糜烂,故被称为“红头黑鳃病”。一般发病1～3天后,病虾便会大批死亡。病原种类按照病原的不同,青虾红头黑鳃病可以分为两类:一类是寄生虫性红头黑鳃病。通过镜检可发现虾的病 Symptoms of shrimp shrimp sick, loss of appetite, slow, most of the static lying on the water or water plants. Red due to early gills, later turned black and erosion, it is called “red head gill disease.” After the general incidence of 1 to 3 days, a large number of diseased shrimp will die. Pathogen species in accordance with the different pathogens, red shrimp black gill disease can be divided into two categories: one is parasitic red head gill disease. Shrimp disease can be found by microscopy