The affected site is operated by Leroy-owned salmon producer Sjøtroll Havbruk.
The Norwegian Food Safety Authority has confirmed the presence of infectious salmon anemia (ISA) at sea location 11559 Grimsholmen in Sveio municipality, Vestland county.
ISA is a viral disease that can result in serious economic losses in the salmon farming industry.
Clinical signs in infected fish can include lethargy, swimming close to the water surface or the sides of cages, pale gills, swollen abdomen, and sometimes, internal and external hemorrhaging.
The disease is a concern for aquaculture operations because of its potential to cause high mortality rates and its impact on fish health and farm productivity.
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The news follows Sjøtroll Havbruk Sjø’s notification to the Norwegian Food Safety Authority on April 25, reporting findings indicating the presence of ISA among fish at the site.
Following this notification, on April 29, the Norwegian Food Safety Authority conducted sample collection for potential ISA verification.
On Wednesday 8 May, the Norwegian Food Safety Authority officially confirmed the diagnosis of ISA.
To contain the spread of infection, stringent restrictions have been imposed on the Grimsholmen site. These measures include a ban on fish movement without specific authorization.
Sjotroll Havbruk is part of the Leroy Seafood Group. The company operates 22 fish farms spanning from Sveio municipality to Osterfjorden. Additionally, Sjøtroll owns six hatcheries and three processing plants located in Brandasund, Reksteren, and Sotra municipalities.
