The jellyfish incident at the Kaldvík fish farm in Reydarfjordur, Iceland, has led to significantly increased mortality.

Jellyfish damage worse than first thought at Icelandic fish farm

Kaldvík reports significantly higher mortality after the incident in mid-September

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Icelandic salmon farmer Kaldvík has provided a new update on the consequences of a jellyfish incident that affected the company's aquaculture facility in Reydarfjordur in September, reports Fish Farming Expert's sister site, Kyst.no.

According to a stock exchange announcement today, the incident has led to an additional mortality of around 11.5 percentage points in the affected 2025 generation since September 4.

This is a significant increase from the 6.5 percentage points the company reported on September 15.

Situation normalised

Kaldvík states that the occurrence of jellyfish in Reydarfjordur has now decreased, and that the biological conditions at the affected locations have normalised.

Both mortality and appetite in the fish have returned to normal levels.

The incident has nevertheless had consequences for the company's biological production and financial situation. In a stock exchange announcement on October 1, Kaldvík announced that the company had entered into an agreement with its lenders regarding temporary exemptions from certain loan terms. The company referred to the negative consequences of the jellyfish incident.

Maintains harvest guidance

Despite the increased mortality, Kaldvík maintains expectations of a harvest volume of around 17,000 tonnes in 2026.

The company emphasises that the forecast is based on the assessments available as of today.

Kaldvík will provide further information about the biological development when the company presents its third quarter results on November 13.

Kaldvík is one of Iceland's largest salmon farmers and is listed on both Euronext Growth Oslo and Nasdaq First North Growth Market Iceland.