570,000 fish fry died overnight: Norwegian salmon giant SalMar's land-based farming system encounters disinfectant "backfire"

The incident has been officially reported to the Norwegian Food Safety Authority (Mattilsynet). SalMar has stated that after the accident, the relevant pipeline systems have been thoroughly flushed and water quality monitoring and management measures have been strengthened, while emphasizing that this incident will not affect the company's overall release plan for 2026. A large-scale death event that is "non-disease-related" Unlike common viral or bacterial outbreaks, this incident was not caused by a known infectious disease, but rather was described by the company as an operational or systemic issue related to disinfectant residues. Anders J. Fjellheim, SalMar's Executive Vice President, confirmed that it is currently not possible to fully assess the health status of the affected fish population, which is the direct reason for the company's decision to cull the fish. In RAS systems, peracetic acid is a widely used disinfectant, primarily for pipelines, equipment, and some water ...