This study shows the presence of Cyprinid Herpesvirus-3 (CyHV–3) in common carp
(Cyprinus carpio) from Iranian carp farms with cumulative mortality up to 80% during 2015–
2016. Pathological signs of disease such as gill necrosis, sunken eyes, and increased slime
secretion on the skin and fins were observed in affected fish. The extensive fusion of
secondary lamellae with necrotic cells, margination of chromatin, and formation of
intranuclear inclusion bodies in gill tissues were also observed by histopathological …