The Norwegian Food Safety Authority has introduced wider restriction areas in Vesterålen after five confirmed cases of Infectious Salmon Anemia since May.
"The recent algal bloom, and now the ISA outbreak, are greatly affecting our operations. We are now working to reduce the consequences," said Nordlaks CEO, Eirik Welde.
A court rejected the company's appeal and upheld the sanction even though it was proven there was an error by the Health Condition Certifier and the laboratory.
Cases of infectious salmon anemia continue to multiply along the Norwegian coast, with authorities enforcing restriction zones to halt the spread of the disease.