Fisheries & Aquaculture

6200 BCE

Jiahu site, China offers speculative evidence of the oldest aquaculture location

Circumstantial archaeological evidence from Jiahu has been proposed as possibly the earliest aquaculture site, dating from about 8,200 years before present. The interpretation remains speculative. It is linked to the trapping of carp in lakes left behind as river floodwaters subsided.

4580 BCE

The Gunditjmara built eel-trapping channels and dams at Lake Condah, among the world's oldest aquaculture works

Evidence indicates the Gunditjmara people of south-western Victoria developed some 100 square kilometres of volcanic floodplain into a complex of channels and dams, using woven traps to capture and preserve short-finned eels year-round. The Budj Bim Cultural Landscape is now a World Heritage Site and one of the oldest known aquaculture sites. Anthropologist Peter Sutton has disputed the classification, noting no evidence of breeding, feeding or rearing.

2000–2100 BCE

Chinese oral tradition records the culture of the common carp some four thousand years ago

Chinese tradition places carp culture as far back as the third millennium BCE, making it among the earliest claimed instances of deliberate fish farming. Early aquaculturists reportedly fed their stock on nymphs and silkworm faeces. Documentary confirmation only arrives much later.

1500 BCE

Ancient Egyptians may have farmed gilt-head bream at Lake Bardawil and traded them with Canaan

Evidence suggests Egyptian fish farming around 3,500 years before present, centred on Lake Bardawil. The fish were reportedly traded into Canaan, implying production beyond subsistence levels. This is among the earliest claimed instances of aquaculture outside China.

475 BCE

Fan Li wrote The Classic of Fish Culture, the earliest monograph on fish farming

Fan Li's treatise constitutes the earliest significant literary evidence for aquaculture in China. It marks the point at which fish culture moved from tradition into codified technical knowledge. The text underpins claims that China is the birthplace of systematic pisciculture.

460 BCE

Yang Yu Jing produced a further Chinese guide to carp farming

This ancient manual shows that carp farming in China had become more sophisticated within a generation of Fan Li's monograph. It documents the accumulation of husbandry technique rather than mere opportunistic trapping.

1st century

The Romans bred fish in ponds and farmed oysters in coastal lagoons

Roman practice established pond-based pisciculture and coastal oyster cultivation before 100 CE. These techniques formed the technical foundation later inherited by European monastic aquaculture. Roman lagoon farming is an early example of what would now be called inshore mariculture.

15th century

Early Christian monasteries adopted Roman aquacultural practices across medieval Europe

Monastic fishponds spread aquaculture inland, where populations otherwise depended on salted fish. Demand was reinforced by roughly 150 fasting and abstinence days per year on which meat was prohibited. The 15th-century fishponds of the Trebon Basin in the present-day Czech Republic survive as a tentative UNESCO World Heritage Site.

first half of the 18th century

Stephan Ludwig Jacobi experimented with external fertilisation of brown trout and salmon

The German experimenter published an article on the artificial production of trout and salmon summarising his findings. He earned a reputation as the founder of artificial fish-rearing. His work established the hatchery principle on which modern finfish aquaculture rests.

late 18th century

North American settlers began oyster farming in Atlantic coast estuaries

By the latter decades of the eighteenth century oyster cultivation had been established in estuaries along the Atlantic seaboard of North America. This marked the transfer of European shellfish culture to the New World. It laid the basis for a commercial shellfish industry.

1855

The English language first recorded the word 'aquaculture' in print

The term appeared in an 1855 newspaper article, initially in reference to the harvesting of ice, and later to sub-irrigation in terrestrial agriculture. The Oxford English Dictionary records the modern usage of 'aquaculture' from 1887 and 'aquiculture' from 1867. The word was applied to hatchery experiments with cod and lobster in 1890.

1859

Stephen Ainsworth of West Bloomfield, New York began experiments with brook trout

Ainsworth's trials opened a sequence of American hatchery experimentation in the mid-nineteenth century. They preceded the first commercial operations in New York State. The work helped establish North American freshwater hatchery capability.

1864

Seth Green established a commercial fish-hatching operation at Caledonia Springs near Rochester

Green's venture turned artificial fish rearing into a commercial proposition in the United States. It was among the first hatcheries operated as a business rather than an experiment. It marks the beginning of hatchery infrastructure as an industry.

1866

W. W. Fletcher and others brought artificial fish hatcheries into operation in both Canada and the United States

With Fletcher of Concord, Massachusetts involved, hatcheries were running on both sides of the North American border. This represented the spread of hatchery capability from isolated experiment to multi-national practice. It established North America as an early centre of artificial propagation.

1889

The Dildo Island fish hatchery, Newfoundland opened as the largest and most advanced hatchery in the world

The Newfoundland facility set a new benchmark for scale and technical sophistication in artificial fish propagation. Its hatchery experiments with cod and lobster were described using the word 'aquaculture' in 1890. It demonstrated the industrialisation of hatchery infrastructure.

1900

Californians harvested wild kelp and attempted to manage supply, later designating it a wartime resource

Around 1900 Californian operators began harvesting wild kelp and trying to manage the resource. The seaweed was subsequently labelled a wartime strategic resource. This represents an early attempt at managed marine plant supply short of full cultivation.

1920s

The American Fish Culture Company of Carolina, Rhode Island became one of the leading producers of trout

Founded in the 1870s, the company had by the 1920s established itself at the forefront of American trout production. Its commercial scale showed that hatchery-based finfish farming could be sustained as a business. It later pioneered advances in spawning control.

1920s

Korean gim cultivators adopted floating rafts for mass seaweed production

Gim cultivation is the oldest form of aquaculture in Korea, originally using bamboo or oak sticks, with nets replacing them in the nineteenth century. Floating rafts introduced in the 1920s enabled production at mass scale. The technique underpins Korea's seaweed industry.

1940s

The American Fish Culture Company perfected manipulation of the day-night cycle for year-round spawning

By controlling photoperiod, the company induced fish to spawn artificially at any time of year. This broke the seasonal constraint on hatchery output and allowed continuous production. Photoperiod control remains a foundational technique in modern aquaculture.

late 1950s and early 1960s

Japanese and Chinese producers began abalone farming

Abalone culture was established in Japan and China in the late 1950s and early 1960s. The industry became increasingly successful from the mid-1990s onwards. It is among the higher-value shellfish aquaculture sectors.

1970s

The shrimp industry began commercial shrimp farming

Commercial shrimp farming started in the 1970s and production grew steeply thereafter, reaching more than 1.6 million tonnes worth about US$9 billion by 2003. The expansion drove large-scale conversion of coastal land, including 269,000 hectares of Indonesian mangroves over four decades. About 20 per cent of mangrove forests have been destroyed since 1980, partly due to shrimp farming.

2024

Global aquaculture reached a record 103 million tonnes of aquatic animals, 53 per cent of output

Farmed aquatic animals accounted for 53 per cent of global aquatic animal output and over 59 per cent of aquatic animal food for human consumption. Production was concentrated in Asia, at around 89 per cent of the global total, followed by Latin America and the Caribbean at 3 per cent. Europe and Africa each contributed 2 per cent.

May 2017

A Belgian consortium installed the first trial mussel farms on a North Sea wind farm

Two trial mussel farms were sited within an offshore wind installation. The project tested co-location of aquaculture with marine renewable energy infrastructure. It pointed towards multi-use of offshore space.

2016

Chilean salmon farms suffered mass fish kill events along the coast

Mass mortality episodes struck salmon farmers along Chile's coast and affected the wider ecology. The events highlighted the environmental vulnerability of concentrated marine cage farming. They added to scrutiny of salmon aquaculture's ecological footprint.

2016

Global fish production peaked at 171 million tonnes, with aquaculture at 47 per cent

Aquaculture's contribution to combined capture and aquaculture production reached 46.8 per cent, up from 25.7 per cent in 2000. Aquaculture production including aquatic plants was 110.2 million tonnes with a first-sale value of US$244 billion. Growth averaged 5.8 per cent a year over 2001–2016, faster than other food sectors but below 1980s and 1990s rates.

2014

Global aquaculture overtook wild-caught fish in supply for human food

For the first time farmed production exceeded capture fisheries in supplying fish for human consumption. Capture fishery output had been relatively static since the late 1980s, leaving aquaculture responsible for all continuing growth. The crossover marked a structural shift in how the world obtains aquatic protein.

2012

A commercial 'sea ranch' was established at Flinders Bay, Western Australia to raise abalone on an artificial reef

Following trials in 2012, the ranch was built on an artificial reef of 5,000 concrete units called abitats, each 900 kg and able to host 400 abalone. It represents a hybrid between ranching and reef construction. The model extends aquaculture infrastructure into open coastal waters.

June 2011

The US Department of Commerce and NOAA released national aquaculture policies

The policies aimed to meet growing demand for healthy seafood, create jobs in coastal communities and restore ecosystems. Large facilities discharging wastewater require permits under the Clean Water Act, and those producing at least 100,000 pounds a year face specific national discharge standards. The framework defined the US regulatory regime for aquaculture.

2009

Researchers in Australia first coaxed southern bluefin tuna to breed in landlocked tanks

The achievement closed the life cycle of a high-value species previously dependent on wild-caught juveniles for ranching. It demonstrated that even large pelagic predators could be propagated in onshore facilities. It extended the range of species amenable to full-cycle aquaculture.

2009

WWF and the Dutch Sustainable Trade Initiative co-founded the Aquaculture Stewardship Council

The ASC was created to manage global standards and certification programmes for farmed seafood. It institutionalised the standards developed through the Aquaculture Dialogues. Certification became a key instrument governing aquaculture practice worldwide.

2008

The International Maritime Organization banned organotins, forcing a search for new antifouling compounds

The IMO prohibition removed the principal antifouling agents used on submerged structures. This created a need for environmentally friendly but still effective antifouling compounds for aquaculture equipment. It remains an unresolved technical constraint on cage and net infrastructure.

2004

WWF initiated the Aquaculture Dialogues to set performance-based standards

The dialogues aimed to develop measurable, performance-based standards for responsibly farmed seafood. They brought producers, buyers and environmental groups into a common standard-setting process. The work led directly to a permanent certification body.

2001

Reg Watson and Daniel Pauly alleged China was over-reporting its wild fisheries catch

The two scientists argued that Chinese over-reporting during the 1990s made the global catch appear to be rising by 300,000 tonnes a year when it was in fact shrinking by 350,000 tonnes. The finding cast doubt on the reliability of global fisheries statistics. It reframed understanding of how far aquaculture, rather than capture, was sustaining supply.

1999

Governments, industry and environmental organisations launched the Seafood Watch programme for more sustainable farming practices

Ecological problems, repeated disease outbreaks and pressure from NGOs and consumer countries drove changes in the shrimp industry and stronger regulation in the late 1990s. The 1999 initiative sought to develop and promote sustainable aquaculture practice. It marked the emergence of market-based governance of aquaculture.

1995–2006

Salmon farming cut its fish-in fish-out ratio from 7.5 to 4.9

Improvements in methods and commercial feeds reduced the wild fish input required per kilogram of farmed salmon. By 2012, 34 per cent of fish oil and 28 per cent of fishmeal came from processing residues. Plant and insect-based feeds are being developed to reduce reliance on wild fish further.

1995–2016

Farmed aquatic plant production more than doubled to over 30 million tonnes, overwhelmingly seaweed

Output grew from 13.5 million tonnes in 1995 to just over 30 million tonnes in 2016. By 2016 aquaculture supplied 96.5 per cent by volume of the 31.2 million tonnes of wild-collected and cultivated aquatic plants combined. Seaweed farming became an almost wholly cultivated sector.

1990–2021

Global aquaculture grew almost sevenfold in output

By 2021 global fish production reached 182 million tonnes, split almost equally between capture at 91.2 million tonnes and aquaculture at 90.9 million tonnes. Reported aquaculture output reached 130.9 million tonnes valued at US$312.8 billion by 2022. The sector's expansion over three decades transformed global food supply.

1990s

Chinese aquaculture suffered disease outbreaks wiping out farmed Farrer's scallop and white shrimp

Disease destroyed two major farmed stocks in China during the 1990s, forcing their replacement with other species. The episode illustrated the vulnerability of monoculture aquaculture to pathogens. It contributed to wider regulatory and husbandry reforms.

1980–1997

Chinese aquaculture grew harvests at 16.7 per cent a year, from 1.9 to nearly 23 million tonnes

The Chinese Bureau of Fisheries reported a twelvefold increase in aquaculture harvests over seventeen years. By 2005 China accounted for 70 per cent of world production. This shift made Asia the dominant centre of global aquaculture capability.

1976

The United States deployed the first fish vaccine, against enteric red mouth

The first vaccine used in aquaculture was applied in the USA in 1976. Early immersion vaccines were effective against vibriosis but not furunculosis, prompting the development of injectable water-based and then more efficient oil-based vaccines. Vaccination became central to managing disease in intensive fish farming.

1973

Jacques Cousteau called for turning to the sea with new understanding and new technology

Concerned about growing seafood demand and its impact on the oceans, the ocean explorer argued that feeding burgeoning human populations required marine production. The statement captured early optimism about a 'Blue Revolution' in aquaculture comparable to the Green Revolution in agriculture.