ban octopus farms worldwide

On February 25, Mexico presented a reform of federal law of fishing to prohibit cephalopod farms throughout the national territory. It may seem strange, but when Maki Esther Ortiz Dominguez stood in front of the Senate of the Republic and defended the moratorium on aquaculture farming of octopuses, squid and cuttlefish, what she said made sense.

Not only is it that they are a terribly difficult business, it is that there is more than firm evidence (always according to the senator) about the enormous problems of cannibalism and risks to public health that these farms bring.

So much so that Mexico is not alone. Chili approved a similar ban in October 2025 and seven US states also have it. And it’s curious because what is being banned, in reality, doesn’t even exist on a commercial scale. The world (also Spain) is trying to prohibit something that is not being done.

Which does not mean that it is not being tried. In fact, the Mexican initiative to prohibit “the reproduction, pre-fattening and fattening of cephalopods” in captivity is based on data from the Sisal facilities (Yucatán)the only farm of this type that is operational on the entire American continent.

There, with the collaboration of UNAM, they have been trying to make octopus fish farms viable for 12 years. AND the data is terrible: mortality rates higher than 52%, 30% of deaths attributable to cannibalism, extremely inefficient conversion rates (three kilos of fish are needed to produce one kilo of octopus) and systematic mistreatment of these species that, if that were not enough, are considered especially intelligent.

Especially intelligent? And ‘sentient’: in recent years, there has been no shortage of statements on the subject (Cambridge, 2012 and New York, 2024); but there is also extensive bibliographical reviews which point out that when we talk about cephalopods, we are talking about animals that are cognitively much closer to us.

And that, of course, has generated consequences. In the same way as the publication of ‘Animal Liberation‘ contributed to creating the animal rights movement, all this research on octopuses has led to an unprecedented legislative trend.

“Unprecedented” because, perhaps for the first time, the legislation comes before farms are a reality beyond experimental centers. And it’s coming very quickly: this regulatory wave has come together in a couple of years.

And who would want farmed octopus? The simple answer is everyone. If the resulting problems are not made visible and affordable cephalopods are available, everyone will eat farmed octopus in a few years. Above all, because they are running out. At least in Spain, there is a whole combination of factors that They have made the octopus migrate north.

In Spain, in fact, a proposal in this regard was already presented in the summer of 2025 and the European Parliament discussed the issue in December of the same year. It’s a matter of time, it seems. And, for now, Mexico and Chile are in the lead.

Image | Milada Vigerova

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