The farmed salmon fartanera: the best-selling and dyed according to the Pantone color of each country

Neither sardines nor anchovies. The most sold fish in our country is farmed salmon, which, for this reason, is gray and is dyed a range from pale orange to orange-red depending on the country where it is sold, because it is known that every land fights its war in colors. The popularity of salmon is probably explained because its nutritional benefits have been spread: as it is oily fish, it provides readily available omega-3. Sardines and anchovies from our ports also provide it. And you will say that salmon has no bones, and it is true, because they are removed with industrial machinery, and I counter-argue: the nutritional benefits of salmon, that is, the polyunsaturated fatty acids that regulate blood cholesterol levels and help reduce the risk of cardiovascular diseases, are only achieved with sardines, anchovies, and oily fish in general with a short lifespan. And with wild salmon. Farmed salmon is another story, and I will explain why.To begin with, in floating cages there is a large number of salmon with a relatively small volume of water, states marine biologist Anna Bozzano, and this fact leads to all sorts of disadvantages. First: medicines have to be used because they are all together and a disease would be easily acquired by all of them. Second: the excrement they form there is organic matter that ends up at the bottom of the sea and suffocates marine life: "There is no animal that can eat it, and that is why the seabed under salmon aquaculture cages are deserts." Fattened with soy feed

To continue, farmed salmon is fattened with feed, made from small caught fish, processed into meal and with soy. “Until a few years ago, to grow one kilogram of salmon, five kilograms of small fish were needed. With soy, it has been balanced to one kilogram of small fish per kilogram of aquaculture; the rest is done by soy”, says Bozzano, who warns that if the proportion of soy with which they make the feed is higher than what the fish can absorb, they get sick because their system is not designed to feed on it. In this fact, the data must be highlighted: small fish and soy are needed to feed aquaculture, and these foods create consequences in the entire system. The small fish used to fatten salmon can come from other areas where the cages are located, such as Africa or South America.And, to finish, let's talk about the color of salmon. Wild salmon eat shrimp that contain a natural pigment, astaxanthin, but there are no small shrimp in the feed, which is why farmed salmon have gray flesh, which the market would not accept if it were put up for sale. So they dye it at the source before putting it on the market. Depending on each country, a different Pantone color. In our country, orange; if you travel and find other shades, lighter, redder, remember that it depends on the final pigment they have given it because it is the color that is liked in that country. A detail: the pigment can be natural or synthetic, which is allowed, but in the latter case, the exact amount that is healthy for the human body is measured, informs marine biologist Anna Bozzano.Despite all this, salmon is the best-selling fish. In 2023, eight thousand tons were sold; in 2024, nine thousand. The second best-selling fish, monkfish, is six thousand tons behind. It is clear, then, the abundance of salmon, but perhaps there is a way to save it: in a growing world population, with an emptying sea, is it perhaps the fish that can provide us with animal protein? But if the sea runs out of small fish, will farmed salmon also not be able to be fed? Perhaps we should eat small local fish and not a distant one, farmed crowded and fed with fish caught on the other side of the world. It is the (dyed) fish that eats its tail.