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However, the disease can also develop without the fish showing any external signs of illness, the fish maintain a normal appetite, and then they suddenly die. The disease can progress slowly throughout an infected farm and, in the worst cases, death rates may approach 100 per cent. It is also a threat to the dwindling stocks of wild salmon.
VHS disease in a gizzard shad. Viral hemorrhagic septicemia (VHS) is a deadly infectious fish disease caused by Viral hemorrhagic septicemia virus. It afflicts over 50 species of freshwater and marine fish in several parts of the Northern Hemisphere. [1] Different strains of the virus occur in different regions, and affect different species.
Ikizukuri (生き作り), also known as ikezukuri (活け造り), (roughly translated as "prepared alive" [1]) is the preparing of sashimi (raw fish) from live seafood. In this Japanese culinary technique, the most popular sea animal used is fish , but octopus , shrimp , and lobster may also be used. [ 2 ]
The genus Anisakis was defined in 1845 [2] by Félix Dujardin as a subgenus of the genus Ascaris Linnaeus, 1758.Dujardin did not make explicit the etymology, but stated that the subgenus included the species in which the males have unequal spicules ("mâles ayant des spicules inégaux"); thus, the name Anisakis is based on anis-(Greek prefix for different) and akis (Greek for spine or spicule).
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Infectious pancreatic necrosis disease virus (IPNV) causes infectious pancreatic necrosis disease (IPN) in fish – most disease has been documented in young, farmed salmonid fish. [ 9 ] Infectious pancreatic necrosis disease virus (IPNV) is a bi-segmented, double-stranded RNA virus belonging to the Aquabirnavirus subgroup of the Birnaviridae ...
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. [19] Mortality is very high in ...
The following is a list of aquarium diseases. Aquarium fish are often susceptible to numerous diseases, due to the artificially limited and concentrated environment. New fish can sometimes introduce diseases to aquaria, and these can be difficult to diagnose and treat. Most fish diseases are also aggravated when the fish is stressed.