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Factory Fish Farming Threatens Fishermen and Farmers - But New Legislation Could Change That

By Anthony Pahnke and Jason Jarvis

Farmers neither milk cows with nets, nor harvest vegetables with rods. And fishermen neither scatter seeds in the oceans, nor catch fish with sickles.

Despite our differences, something we do share is a common threat from the expansion of industrial fish farming and big agribusiness.

More specifically, the expansion of industrial fish farming provides an increasingly profitable outlet for large-scale agriculture corporations to market surplus grains like soy and corn as “fish feed.” Such developments threaten both fishing and farming communities, as the model promotes industrial production of genetically modified monocrops for concentrated animal feeding operations on land and at sea.

According to the Food and Agriculture Organization (FAO), marine and inland aquaculture production has significantly increased around the world from 1990 to 2022, with the former growing from 12.6 to 44.7 million live weight tons, and the latter moving from 9.2 to 26.8 million live weight tons.

Factory fish farms have emerged to line the pockets of big corporations by producing monocultures of fish at mass volume, under the guise of satisfying seafood demand. This "demand" is artificially created by the fact that we currently export 75-80% of U.S. wild-caught seafood. US wild-capture fishermen landed more fish domestically than Americans consumed in 2020, according to the National Ocean and Atmospheric Administration.

The influx of nutritionally inferior farmed fish devalues sustainable and diverse wild-caught fisheries, forcing fishermen to accept pennies on the pound for hard-earned fish. Furthermore, wild forage fish, which make up the base of healthy marine ecosystems, are being harvested for incorporation into aquaculture fish feeds, along with soy and corn. These fish, specifically Menhaden and herring, are the main source of protein for every species of finfish.

Densely packed fish farms also degrade ocean ecosystems. They amount to floating feedlots that pollute waters with antibiotics and fish waste; endanger marine mammals that interact with the cages; and compromise local coastal economies that depend on fishing and tourism. From coast to coast, lobbyist-backed efforts are underway to expand this industry in the United States.

Certain large-scale agribusiness firms have jumped on the bandwagon and made offshore industrial fish farming an area of focus. In a nutshell – or perhaps a soybean – the firms together referred to as “ABCD” (Archer Daniels Midland, Bunge, Cargill, and the Louis Dreyfus Company) are developing what is known as “aquafeed.”

According to Cargill, aquafeed includes “co-products” that are “not of marine origin.” Those “co-products” include all kinds of things, including large amounts of soymeal and corn - most of which is genetically modified.

Should fish eat corn or soy? Common sense says no.

As you can imagine, fish have trouble digesting grains. On top of that, placing thousands of fish in confinement generates other issues, including disease and illness.

In response, Cargill has acquired firms, such as Diamond V, which specialize in producing feed additives to improve fish health and digestion. They are also working on new “co-products,” such as insects and algae to supplement the soy and corn that fish are forced to eat.

Notice the circle: agribusiness firms create solutions for problems they created in the first place. In fact, we wouldn’t have to worry about fish diets if they were not sick from being crammed into unnatural habitats, eating manufactured food — basically, if there were no factory fish farms.

Meanwhile, our current industrial agricultural system rests upon bailing out farmers just enough through schemes like crop insurance, so that they continue to grow excess corn and soy, regardless of demand. In fact, crop insurance has become the second largest section of the Farm Bill, the mammoth piece of federal legislation that covers programs ranging from rural development to food access to beginning farmer training. In comparison, federal agencies spend a pittance on policies that could promote diverse operations and climate solutions.

The truth is that mega-scale agribusinesses' grain merchants wouldn’t be looking to force-feed soybeans and corn to fish if we had a decent agriculture policy that supported farmer incomes and local, diversified operations, rather than crops that feed into the commodities market. Instead, soy and corn are being overproduced in the U.S. and the Global South, often on land seized from Indigenous peoples for mono-crop expansion that relies on deforestation and pesticide use.

This plays out as a perfect scenario for agribusiness giants to pad their pockets. But not so for small-scale farmers and fishermen, who don’t see any benefits for themselves or their communities.

Still, there’s hope. New proposed legislation for the currently debated Farm Bill may yield positive results, instead of more commodities in our global industrial food system.

Senator Lisa Murkowski (R-AK) recently introduced the Improving Agriculture, Research, Cultivation, Timber, and Indigenous Commodities (ARCTIC) Act, much of which is aimed at including seafood in the Farm Bill. The legislation bans offshore fish farms in federal waters, while increasing portside processing facilities for small-scale fishermen. It also calls for country of origin labeling for cooked crab that may come from outside of the US into our markets, as well as a ‘Wild USA Seafood’ label for fish that is landed in US waters.

Preventing the development of offshore factory fish farms is a win for fishing communities. But it’s also a potential win for farmers and the environment. It could deter farmers from continuing on the commodity grain treadmill, allowing them to instead diversify in search of market alternatives and better profits.

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Canada is trying to decide how much agricultural research capacity it can afford to lose. Brian Rossnagel believes the better question is whether the country can afford to rebuild it.

The longtime barley and oat breeder makes the case with a simple fact about his profession: the consequences of today’s decisions may not become visible for 10 or 15 years.

“Pick the right parents. That’s the biggest thing,” Rossnagel says. “If you pick the wrong parents, you’re not going to get anywhere—and you don’t know that until 10 years, 15 years later.”

That warning carries particular weight as Agriculture and Agri-Food Canada moves to reduce spending and streamline parts of its science operations. The department’s 2026–27 plan anticipates the loss of approximately 665 positions by 2028–29 and says some research will be reduced where capacity exists in academia or industry. AAFC says the changes will make its science operations more cost-effective over the long term.

For Canada’s seed industry, Rossnagel’s career illustrates what is at stake.

This fall, the retired University of Saskatchewan breeder will be inducted into the Canadian Agricultural Hall of Fame. During his 35-year career at the Crop Development Centre, he helped develop more than 100 barley and oat varieties, including CDC Austenson—one of Western Canada’s most widely grown feed barleys. His induction recognizes not only those varieties, but the collaboration and research system that made them possible.

Rossnagel is quick to emphasize that none of it was the work of one person.

“The first thing I thought about was all the other people who contributed to whatever success I and my program had over the years,” he says. “We know that it’s not an individual who does this. It’s a group—a team.”

That team extends well beyond the breeder whose name appears beside a variety. It includes technicians, pathologists, quality specialists, statisticians, regional testing sites, seed growers and industry partners. It also includes the breeders who came before and those who will carry the germplasm forward.

CDC Fraser barley, for example, moved through three breeding careers. Its parents came from Brian Harvey’s program. Rossnagel advanced the material after Harvey retired, and Aaron Beattie later guided it through registration and release.

That kind of handoff is normal in plant breeding. The person who makes the original cross may never see the resulting variety reach farmers.

It also explains why lost research capacity cannot simply be switched back on when budgets improve.

“If you shut it off, it’s very, very difficult—and particularly costly—to start it up again,” Rossnagel says. “If you have to start from scratch, it’s going to be at least 10 years before anybody notices whether you’re getting anything done or not.”

The concern is not simply how many experimental lines Canada can process. Modern equipment, statistical tools and genetic technologies allow today’s breeding programs to evaluate tens of thousands of lines—far more than Rossnagel could handle when he entered the field in the early 1970s.

But efficiency and automation do not generate every idea.

“If you pare back down, and instead of having six or seven individual scientists concentrating on wheat breeding, you go down and say three people could handle all this, well, that’s half the ideas gone,” he says. “Particularly if you happen to lose the three people who had the really neat and innovative ideas, boy, that’s a problem.”

It is a timely distinction for Canadian agriculture. Consolidating programs may preserve the volume of material moving through a system, at least initially. It may not preserve the diversity of thinking, regional knowledge or willingness to pursue unconventional crosses.

That regional knowledge matters because Canadian agriculture is not one uniform production environment. A variety suited to southern Alberta may face different disease, moisture and maturity pressures than one grown in Manitoba, Ontario or Atlantic Canada.

“Agriculture is applied biology,” Rossnagel says. “Biology, all around the Earth, moves from the poles to the equator. It does not move from Newfoundland to B.C. like politics do.”