Fig. 1

Nile tilapia naturally infected with E. tarda. *(star): A; Tail rot, B; hemorrhage at base of operculum fin, C; hemorrhage at base of anal fin, D; hemorrhage at dorsum, E; hemorrhage at base of dorsal fin, F; hemorrhage at the abdomen. ** (2 stars): A; brownish red liver, B; enlarged gall bladder, C; slightly splenomegaly, D; slight inflamed intestine, E; remnant of abdominal fluid