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India: The Dirty Business of Fishmeal

On November 5, 2020, a team of government investigators arrived to inspect a fishmeal plant named United Marine Products in the Cuncolim Industrial Estate in Goa, India.1 Fishmeal, a protein-rich dark-yellow powder made by pulverizing and cooking wild-caught fish, is used as feed for carnivorous farmed fish like shrimp, salmon, and tuna. The investigators were there to figure out why the plant smelled so bad and how it was disposing of its toxic wastewater.2 For years, local residents had said that the plant was making their air unbreathable and their drinking water deadly.

The stench that often accompanies these types of factories can be more than just a nuisance for people living nearby. It is an indicator of noxious chemicals like ammonia, hydrogen sulfide, cyanide, and methane, which have been known to contribute to serious health problems, including nausea, pulmonary edema, and even death among plant workers and neighbors.3 The worst part of the odor comes from trimethylamine, or TMA, a colorless gas that gives rotting marine creatures their “fishy” smell and was identified in 2021 as “strongly toxic and carcinogenic.”4 The stink also corrodes the local economy by undercutting tourism and scaring away restaurant patrons and beach visitors. As of 2025, more than 285,000 people, including over 6,400 children under the age of 15, live within a mile of fishmeal plants in India.5M

A fishing trawler brought a large catch of sardines to port in Rameswaram, India in 2015. In India, sardines are a key ingredient used by the fishmeal industry.
A fishing trawler brought a large catch of sardines to port in Rameswaram, India in 2015. In India, sardines are a key ingredient used by the fishmeal industry.Rudolph A. Furtado/Wikimedia Commons

Using ground-penetrating radar, the inspectors who visited the United Marine plant discovered that the plant operators had employed a new and illegal way to dispose of the facility's wastewater.6 They had allegedly drilled hidden boreholes into the ground in a discreet field behind the plant, according to the Navhind Times.7 These holes were probably contaminating groundwater and likely the cause of sick villagers and livestock, the authorities later concluded.

In subsequent days, inspectors visiting other fishmeal plants in the area found a number of problems, including illegal timber used to power boilers, wastewater discharged directly into public rivers or streams, and air pollution reportedly leading to respiratory issues among the local population.8 Although authorities soon announced plans to file criminal charges, impose suspensions, and issue fines, the charges against United Marine Products and most of the other plants were dropped several weeks later, allegedly a result of pressure from politicians and industrial lobbyists, according to local media.9 United Marine said the investigation proved that the allegations of illegal borewells within its premises were unfounded.10

The subterfuge, raid, and weak enforcement at the Cuncolim Industrial Estate exemplified an industry that has become as powerful as it is unregulated. In a little over a decade, India has emerged as one of the world’s biggest producers of shrimp. In 2025, roughly a third of the shrimp eaten in the US and a quarter worldwide came from India.11 Virtually all of this shrimp is grown on more than 100,000 landlocked farms, most of which rely on fishmeal as a feed ingredient.12 Farmed shrimp accounted for nearly a third of fishmeal used globally in aquaculture in 2019.13 This fishmeal is made from fish caught primarily in near-shore waters by hundreds of Indian ships. It is then pulverized, cooked, and turned into flour or pelletized in more than 70 plants spread across the country.

Police clashed with local residents on April 19, 2024, during a demonstration that sought to shut down several fishmeal plants in southern India. The country has faced repeated and long-running civil unrest tied to stench, worker safety, and water pollution linked to fishmeal production.@rajanjourno on Twitter

Producing fishmeal in India is a dangerous and dirty business that sometimes sees toxic dumping, illegal fishing, plant explosions, and worker asphyxiations.M Between 2018 and 2024, at least 30 Indian fishmeal plants were involved in a variety of environmental violations and other legal infractions such as tax evasion, using illegal timber to fuel boilers, dumping waste into waterways and boreholes, or inadequate safety protections, according to news reports, government documents, and court filings.14M These plants were also the target of at least 18 instances of civil unrest during this period, including protests that sent hundreds of Indians to the streets in half a dozen cities and villages, with some blockading roads to stop trucks, violently clashing with police, and in one instance, spurring a boycott of local elections.15M

Fishmeal Plants in India

The industrial park in Cuncolim, where inspectors raided plants in 2020, was emblematic of an industry whose misbehavior is less rogue than routine, according to Vijay Prabhu, an Indian lawmaker. For years after the raid, local residents repeatedly protested the plants, leading to a complaint Prabhu lodged in November 2023 with Goa state authorities: “Over the past decade-and-a-half, and particularly in the last four months, the residents of Cuncolim have been subjected to an alarming level of environmental degradation due to unchecked activities of fishmeal plants and fish processing factories.”16

Beyond the problems on land, India’s fishmeal industry also has a spotty record offshore. Many of the ships supplying the country’s fishmeal plants fish illegally or unsustainably. About a third of all fish caught in Indian waters goes into making feed, with plants mostly processing small pelagic fish, which are a species that play a crucial role in the local ecosystem.17 Researchers and ocean conservationists fault this system—which processes large piles of fish inside factories—as unsustainable and wasteful, effectively extracting vital sustenance from poorer nations to produce seafood typically consumed in wealthier ones.

Workers culled a large pile of fish inside a fishmeal factory in Karnataka. Food researchers and ocean conservationists say reducing wild fish to feed farmed seafood diverts a key source of protein from local communities to wealthier markets.
Workers culled a large pile of fish inside a fishmeal factory in Karnataka. Food researchers and ocean conservationists say reducing wild fish to feed farmed seafood diverts a key source of protein from local communities to wealthier markets.Vaishnavi Chandrashekhar/Mongabay

The consequences of this extraction are evident: Two of the key species, Indian oil sardine and Indian mackerel, were classified as “overfished” in Indian waters in a 2021 journal article, meaning they are caught faster than they can reproduce, shrinking the population and reducing its capacity to recover to healthy levels.18M Overfishing has persisted to the extent that some species have been brought to the verge of extinction, as Indian oil sardine—a staple food in southern India—saw a stock collapse in 2016, partially driven by fishmeal production.19M While subsequent stock assessments, including one by India’s Central Marine Fisheries Research Institute in 2024, indicate a significant increase in the biomass of Indian oil sardine and fluctuating increases for mackerel, scientists caution that the boom-bust nature of these fisheries makes it difficult to estimate the longer-term health of these waters.20

Western India is a major hub of the country’s fishmeal industry, especially in Kerala, Maharashtra, and Gujarat, as well as the southern state of Tamil Nadu.M In particular, the city of Ullal, in the state of Karnataka, is home to at least 12 plants, many of which have been the focus of persistent allegations of pollution and environmental violations.41M These plants lacked adequate procedures to remove plastic contamination from fish inputs, and workers observed untreated wastewater, known as stickwater, being dumped into nearby waterways and mangrove fields, according to a report from the Changing Markets Foundation.42

Several fishmeal plants in Ullal are within a few hundred feet of mangrove fields and large residential areas.
Several fishmeal plants in Ullal are within a few hundred feet of mangrove fields and large residential areas.

The pollution by this industry has sparked intense pushback. In the state of Tamil Nadu, for example, residents of Pottaloorani village in the Thoothukudi District waged an ongoing protest for over 175 days in 2024. The protestors demanded the closure of three nearby fishmeal and fish oil plants due to unbearable stench and alleged contamination of air, water, and soil​. Villagers reported that for four years their groundwater had been spoiled and the government ignored complaints​. The protests eventually culminated in a boycott of area elections and locals organizing parallel governance meetings, passing resolutions against the factories​. During this long-running set of protests, tensions also boiled over when a state fisheries minister’s visit led to a violent clash between protestors and authorities in May 2024​. The fallout reportedly even included a local school teacher, who helped organize the protests, being transferred, in a move that local news outlets described as retribution​. Fishmeal from one of these plants has gone to feed shrimp at Indian farms that produce shrimp sold by Gordon Food Service, one of the largest food distributors in the United States, and Hanos, a wholesaler based in the Netherlands.43 Gordon Food Service and Hanos did not respond to a request for comment.44M

Industrial drainpipes emptied into the Periyar River. Among the most difficult challenges for fishmeal plants is disposing of the slackwater, toxic sludge left over from cooking and pulverizing thousands of tons of decaying fish.
Industrial drainpipes emptied into the Periyar River. Among the most difficult challenges for fishmeal plants is disposing of the slackwater, toxic sludge left over from cooking and pulverizing thousands of tons of decaying fish.True Copy Think

In some areas of India, pollution from fishmeal plants has become commonplace. In May 2024, sections of the Periyar River running through the Eloor-Edayar industrial area in a district of Kerala turned black, and thousands of dead fish rose to the surface, belly up.45 It was the 15th time in four months that parts of the river turned black and the eighth mass fish kill in a pattern that government regulators said was most likely caused by fishmeal and other factories dumping waste upstream.M

India’s rise as a global leader in shrimp production was spurred partly by a void in the market left by Thailand. Starting in 2014, Thailand faced growing international criticism for labor abuses on its fishing ships and in shrimp peeling sheds or processing plants.78 When Western supermarkets began looking for other places to source their shrimp, many turned to India. The cruel irony, however, is that India’s shrimp industry has been dogged by many of the same labor abuses that were found in Thailand. In particular, India’s shrimp farms are often worked by migrants, many of them very poor and at times trafficked.

An investigation in 2024 by The Outlaw Ocean Project revealed how one US shrimp company operating in India, Choice Canning, trapped workers, failed to pay them, routinely misled labor auditors, and used antibiotics on shrimp shipped to the US and EU, despite bans on the practice.79 Choice Canning said that the company never underpaid workers, prevented them from leaving without permission, or maintained subpar living conditions, and denied misleading auditors or shipping shrimp containing antibiotics.80 A non-governmental organization called the Corporate Accountability Lab released a report the same year, revealing that many of the same problems existed at shrimp processing plants elsewhere in the country.81

Watch VideoShrimp Empire: Bloodwater in India's Aquaculture Boom

These various revelations resulted in an initial reckoning by the Indian shrimp industry. This included a Food and Drug Administration warning notice tied to shipments from Choice Canning, the addition of Indian shrimp to the Department of Labor’s list of goods tied to forced labor in 2024, and a letter from lawmakers in March 2024 urging an immediate halt to shrimp imports into the US from India.82 But these actions toward the Indian shrimp industry focused primarily on the farms where the crustaceans are grown and on the processing plants where they are de-veined, cleaned, and prepared for export. These government efforts did not look further up the supply chain at the fishing ships and fishmeal plants involved in catching and preparing the feed for the shrimp.M

Work in India’s fishmeal plants can be dangerous, with fatalities resulting from asphyxiation, fires, and explosions.83 The process of cooking rotting fish not only produces foul odors but also dangerous gases, including hydrogen sulfide. The industry's reliance on old machines in India means sparks can ignite easily, and fishmeal itself is highly flammable and notorious for spontaneously combusting as it decays.

These hazards have led to tragic incidents. In December 2021, at Bismi Aquatic Products in the south of India, a migrant worker died after cleaning a wastewater tank, passing out from the fumes, and falling in.84 Two other workers who tried to save him were hospitalized, and government regulators criminally charged the plant for lax safety.85 In a written response to The Outlaw Ocean Project, Bismi Aquatic Products stated that the worker who died was not following safety protocols and added that the incident “left an indelible mark” with “lessons learned ensuring better operating safety guidelines.” The company also said that it provided financial compensation to the deceased worker’s family. A few months later, on February 20, 2022, two migrant workers were killed and three others injured in a boiler explosion at Bismi Fisheries Private Ltd, another fishmeal plant in the south of India.86 Government regulators criminally charged this plant with negligence. Bismi Fisheries did not respond to a request for comment.M

Fishmeal plants often rely on migrant labor. A 2019 Changing Markets Foundation report documented interviews where some of these workers described unsafe conditions, including a lack of protective gear. The report concluded that factories prefer migrant workers over local labor because they can pay them less and face a lower risk of unionization. Severe workplace injuries, such as amputations and fatalities from falls into effluent tanks, often went unresolved because companies sometimes bribe locals or use intimidation to silence dissent, the report said.87M

Migrant women fishworkers take a break at Mangalore Harbor in Karnataka, India.
Migrant women fishworkers take a break at Mangalore Harbor in Karnataka, India.Changing Markets Foundation

India’s fishmeal industry became so powerful partly because of massive demand from Americans for shrimp, which is the most-consumed seafood in the United States. Per capita, Americans eat more than five pounds of shrimp every year.88 This popularity is relatively recent. Shrimp used to be a luxury food, and it was virtually all wild-caught, primarily by trawlers operating near the coast of the Gulf of Mexico. In the second half of the 20th century, the cost of shrimp in the US was higher because these trawlers caught less, used expensive amounts of diesel, and fished only during particular seasons. That changed in the early 2000s, when imported and farm-grown shrimp became the norm.

Before the 1980s, less than one percent of the world’s shrimp were farm-raised. Aquaculture researchers had not yet figured out how to breed shrimp in captivity. Shrimp farmers did not know, for example, how best to combat viruses or how to adjust water salinity to maximize growth. This changed as researchers learned how to better clean farm pools using sophisticated filtration, purification systems, and, controversially, antibiotics. Farmed shrimp also grew in popularity as ocean conservationists began promoting aquaculture as a means of slowing overfishing at sea. Seeing the market possibilities, governments and companies in India, Thailand, and elsewhere in Asia and Latin America started clearing millions of acres of land to create shrimp ponds, where juvenile shrimp are released and grown to a market-ready size.89

A shrimp processing facility owned by a company called Choice Canning was the focus of an investigation in 2024 that revealed extensive concerns about human rights and food safety abuses. Most of India’s fishmeal goes to the country’s shrimp farms. By 2021, India exported nearly a quarter of the world’s shrimp.
A shrimp processing facility owned by a company called Choice Canning was the focus of an investigation in 2024 that revealed extensive concerns about human rights and food safety abuses. Most of India’s fishmeal goes to the country’s shrimp farms. By 2021, India exported nearly a quarter of the world’s shrimp.Ben Blankenship/The Outlaw Ocean Project

US consumers preferred the imported farmed shrimp not only because it was cheaper than the wild-caught version from Louisiana and Alabama. Farmed shrimp was available year-round and could be grown to consistent sizes, which made them easier to advertise to a public that prefers uniformity. In 1974, Red Lobster introduced popcorn shrimp, a bite-sized, battered, and fried shrimp dish, which became wildly popular. Grocery chains soon began to stock bags of frozen, precooked shrimp in their stores. By 1985, the fast-food chain Popeyes introduced Cajun Popcorn Shrimp, a deep-fried dish meant to compete with McDonald’s Chicken McNuggets. Shrimp was no longer primarily found at fine-dining spots with tuxedoed waiters and white tablecloths. It had moved fully into being an everyday American staple.90

For years, India has lacked clear rules aimed at protecting the health of its fishing stocks. The industry has largely gone unregulated, and yields have slowed in the past decade, including an unexpected and disruptive crash of the sardine catch in 2016. The sardine crash prompted changes beyond fishing regulations and led to a bust in the Indian fishmeal industry in the southern states of Karnataka and Tamil Nadu. This bust resulted in promises from fishmeal companies to stop targeting juvenile fish. In 2019, India created its first ministry of fisheries.133

A corporate marketing video by a fishmeal and fish oil manufacturer showed sardine landings, workers, and processing equipment at its plant in Cochin, Kerala, India. The country created a fisheries ministry in 2019 after years of limited regulation, a 2016 sardine crash, and a downturn in the fishmeal sector.Marksmen Marine Products

Many of India’s fishmeal plants use bycatch, which refers to non-targeted species of fish killed inadvertently. They also use trimmings, which are offcuts from catch primarily destined for human consumption.134 However, the high demand for fishmeal in India incentivizes fishing boats to target juvenile and other fish that are not usually consumed by humans so as to sell them to fishmeal plants, according to researchers. This removes young fish before they can reproduce, undermining fisheries’ regeneration.135 While some Indian states have taken steps to regulate the fishery industry, including implementing laws against juvenile catch of certain species and restrictions on mesh size, these policies vary and have not historically been implemented nationally or industry-wide.136

Furthermore, fishmeal plants in India also typically pay in advance for a ship’s entire catch before that vessel has left port, which ends up being a driver of overfishing since the captains and operators of those boats are required to deliver a certain amount of catch to break even.137 Most of the fishmeal produced in India is reserved for domestic use, but as of 2024, the country was also the world’s third-largest exporter of it, especially to China, Vietnam, Japan, Taiwan, and Bangladesh.138 For fish oil, the biggest amounts went to Chile, Australia, Spain, Ecuador, and Belgium.M

An Indian manufacturer presented different types of fish feed processing machines. As of 2022, India’s fishmeal plants produced over 300,000 tons annually, valued at about $200 million.Mechpro Engineering

Regardless of whether the world’s seafood industry doubles down on sourcing from India or turns away from it, fishmeal production is likely to grow. In 2019, the Indian government imposed a moratorium on registering new fishmeal plants—a move that was meant to curb overfishing of juvenile species and threats to local food security.139 The industry is bullish, and the government is supportive. “Rather than causing pollution,” Dawood Sait, the president of the Indian Marine Ingredients Association, said about fishmeal, “it helps clear pollution-causing waste.”140 The association has also said it aims to triple its output in coming years to keep up with the rising global demand for shrimp. Toward this end, the Indian government announced in 2024 plans to help the industry by lifting the moratorium on new fishmeal plants.141