There have never been more salmon in the world. It’s time we declare them a threatened species
Last year, global production of farmed Atlantic salmon amounted to 3.12 million tonnes. That amount is 8,000 times the catch of wild salmon and it is logical: to the extent that aquaculture has become the “pretty girl” of the fishing industry, these are not good times for wild salmon. And no, it is not something that only affects the cold waters of the Norwegian fjords. In Spain, in 2024, only 130 copies were sealed. He all-time low since control of the Asturian rivers began in 1949. And lthe situation is going to get worse. Why is it going to get worse? The reason it’s not obvious. When we talk about this problem, the first intuition is to think that it is a simple question of ‘attention’. Before we needed to take care of wild salmon habitats to ensure we could catch them. Now that aquaculture has made the wild supply dispensable, the incentives to maintain it have disappeared. But, in reality, it is worse. Because the truth is that the dynamics of aquaculture are actively working on the collapse of the wild population. We have well located the three big problems: 1) the hybrid salmon escapes (who have better farm fitness, but worse ocean survival) than They mix with wild animals and produce genetic problems.2) the spread of sea louse because the concentration of fish in cages amplifies the parasite load and, finally, 3) the need for forage fish to feed the farms removes resources for other fish. And the consequences are visible to all. In Asturias it is not only that the season has started two weeks later than usual, it is that the first salmon (campanu) the latest day in history has arrived. But that’s only part of the story. In Norway, for example, only 323,000 wild salmon were observed in 2024. The previous year, the figures They amounted to 481,463 copies. In fact, last year fishing was prohibited in 42 rivers and three fjords. In Scotland, another of the great salmon-growing countries, the population of wild specimens has fallen by 80% since the 1970s. Is it only a problem related to aquaculture? No, it would be unfair to say this. The decline is global and has a lot to do with climate and food chain problems. But the evidence tells us that not even repopulating is of any use: we have been taking counterproductive initiatives for decades that reduce genetic diversity and make the species increasingly fragile. Image | Bruce Warrington In Xataka | We are drugging the salmon with cocaine and anxiolytics. And that’s causing them to behave strangely.