De-lousing kills 32,700 fish at Marine Harvest operation

Marine Harvest recently reported 32,700 fish died during a de-lousing procedure.

The incident occurred when the company carried out a de-lousing of all the cages at one of its farm sites, the company wrote in a report to the Norwegian Food Safety Authority (NFSA).

"Unfortunately we had excessive mortalities with this treatment," Eivind Naevdal-Bolstad, communications director at Marine Harvest, told IntraFish.

"The reason was the fish that were being treated were far weaker than had been anticipated."

Around 19,620 fish died immediately after treatment, but this figure increased to a total of 32,700 fish a week later.

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