Infectious Hematopoietic Necrosis Virus - Clinical Signs

Clinical Signs

Clinical signs of infection with IHNV include abdominal distension, bulging of the eyes, skin darkening, abnormal behavior, anemia and fading of the gills. Infected fish commonly hemorrhage in several areas; the mouth and behind the head, the pectoral fins, muscles near the anus, and (in fry) the yolk sac. Diseased fish weaken eventually floating “belly-up” on the surface of the water.

Necrosis is common in the kidney and spleen, and sometimes in the liver. Mortality is very high in young fish.

Some fish become covert carriers of the virus if they survive infection.

Read more about this topic:  Infectious Hematopoietic Necrosis Virus

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