Biomass in Norwegian fish farms has increased for salmon and trout.

There was 13% more biomass in Norway's salmon farms in March

There have never been so many salmon in the sea at the end of that month

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According to Akvafakta's monthly statistics, there were 802,000 tonnes of salmon in Norwegian fish farms in March. This is significantly higher than any other year before and up 13% from the same time last year. This continues the trend that began in earnest in December with a solid increase in biomass compared to the previous year.

A similar trend is also seen for trout, which saw an increase of 12% from March 2024, which in turn had an increase of 19% from 2023. At the end of March this year, there were 46,000 tonnes of trout in the sea.

Biomass of salmon in Norwegian fish farms at the end of the month in 2023 through to the end of March 2025.

Feed consumption in March was up a whopping 31% for both salmon and trout.

The temperature in the sea was 0.9 degrees above the same month a year ago.

The big deviation in all this increase, however, is the unstocked fish. March is not the big stocking month, but even so, with 12.3 million salmon and 2.5 million trout, 20% and 48% fewer fish respectively were stocked than in March 2024. It is interesting to note, however, that the average weight of 25G (fish stocked this year) of about 500g is 34% greater than the corresponding average weight for 24G fish a year ago.