Pathogenicity of Aeromonas hydrophila in High-value Native Pangasius Catfish, Pangasius nasutus (Bleeker)

Pangasius catfish, nasutus, is a promising candidate for aquaculture due to its high market value. However, the presence of pathogenic bacteria in Aeromonas hydrophila major concern P. nasutus farming this country. This study determines pathogenicity A. nasutus. A total 80 juveniles were intraperitoneally injected with 0, 103, 105, and 107 CFU mL-1 monitored until 240 hr. The infected moribund fish’s kidneys, livers, spleens collected histopathological analysis. LD50-240hr value was found at 0.8 × 104 CFU/ml hydrophila. percentage mortality groups be 40, 60, 90%, respectively. fish showed congestion base fin, ascites, enlarged gall bladder, swollen spleen. It earliest report on hydrophila’s high-value native fish,