Histopathological observations of the rotten-skin disease of bullflog(Ranacatasbeiana)by examinations of 9 organs infected natually experimentally showed that be-sieds inflammation,hyperelnia,necrosis and gangrene of local skin,acute supparative myosi-tis,pneuminia,mild catarrhal gastroenteritis,hepatic necrosis,suppurative nephritis,acutesleenitis occurred.These indicated that pathogenosis of the disea...