Carp Pox in Fish
Carp Pox is a viral disease which is caused by the herpesvirus infection. It is one of the oldest diseases seen in fish. As the disease weakens the fish with infection and lesions, it leaves the fish susceptible to secondary infections by other microorganisms. The fish also become disfigured by the disease.
This disease usually affects carp and koi, but can also infect other types of fishes, and is therefore also named fish pox.
Symptoms and Types
Initially, the Carp pox shows up as milky skin lesions, which are smooth and raised in appearance. These lesions are not aesthetically pleasing and devalue the koi fish, which is known for its looks. In severe cases, the viral infection also diminishes the fish's immunity and leaves the lesion-filled (papillomas) area prone to a secondary infection by bacteria.
The Carp pox is caused by the virus herpesvirus-1 or HPV-1, which affects the fish's skin.
A change in the way that tissue is constructed; a sore
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