Bluefin tuna (specifically Pacific, Atlantic, and Southern) are among the most severely overfished species, driven by high demand in, for example, high-end sushi markets. Populations of Atlantic bluefin tuna, for instance, dropped 72-82% in just 40 years. Other critically endangered or heavily overfished species include the Southern Bluefin Tuna, Atlantic cod, haddock, and European eel.
Overfishing is the primary threat to bluefin tuna populations. Effective conservation and management of highly migratory species like bluefin tuna require international cooperation as well as strong domestic management. Other common names are: giant bluefin, northern bluefin tuna, tunny, and oriental tuna.
Bluefin tuna are heavily overfished, and most experts agree that without prompt intervention, the slow-growing, slow-maturing species will become extinct.
In one of the most comprehensive analyses of fish stocks since Brexit, Oceana UK's Deep Decline report reveals that half of the 'top 10' commercial fish stocks on which UK fishers rely – including North Sea cod, North Sea herring, North East Atlantic mackerel and Southern North Sea edible crab – are in a critical ...
A 500 lb bluefin tuna's worth varies wildly, from potentially thousands for a regular catch to over $3 million at Tokyo's New Year's auctions, where a 535 lb fish sold for a record $3.2 million in 2026, demonstrating extreme market hype for quality fish used in premium sushi. For fishermen, the price is much lower, often a few dollars per pound, but the top auction prices reflect quality, prestige, and demand for high-grade tuna (like otoro), not typical retail value, notes a Quora post.
Only 41% of the UK's commercial fish populations have been found to be healthy. A quarter are being fished beyond sustainable limits. And one in six are both critically low and yet still being overfished, placing them on a course to collapse.
In 2000, the World Wide Fund for Nature placed cod on the endangered species list. The WWF issued a report stating that the global cod catch had dropped by 70% over the last 30 years and that if the trend continued, the world's cod stocks would disappear in 15 years.
The haddock stock is healthy, and overfishing isn't occurring. However, this fishery catches other species that are overfished, experiencing overfishing, or both.
The Coelacanth: The Fish That Refused to Go Extinct The Coelacanth is one of the most mysterious animals on Earth. Once believed to be extinct for over 66 million years, it shocked the world when a living one was discovered in 1938.
A wide range of animals and plants suddenly died out, from tiny marine organisms to large dinosaurs. Species go extinct all the time. Scientists estimate that at least 99.9 percent of all species of plants and animals that ever lived are now extinct.
Many of us remember nights when cod were so abundant that it seemed they could never fail. Overfishing has eroded that abundance: industrial-scale trawling and gillnetting have taken a massive toll over the course of decades – what was once plentiful is now rare.
Cod are found around all coasts of Britain and Ireland. Their distribution ranges from North Carolina to Greenland in the western Atlantic and from the Bay of Biscay to the Barents Sea in the eastern Atlantic and throughout the North Sea. They can tolerate temperatures from 0°C to over 20°C.
Fish play important roles as both predators and prey in ocean ecosystems. Thousands of species throughout the ocean and terrestrial ecosystems rely on fish for food – including people. In coral reef ecosystems, small fish are eaten by larger fish and other marine animals.
The International Council for the Exploration of the Sea (ICES), a Denmark-based independent body which advises the government on managing fish stocks, has judged that the cod population in almost all of Britain's waters are so depleted that none should be caught next year for the species to recover.
China is the ruler of the world's largest fish producer. This Panda country leaves far away from its competitors, including India with a distance of six times more. With a total global fish production of 178.8 million tons, one-third of the world's fish production comes from China.
There are still few places better to cast than Scotland's romantic rivers, streams, and lochs. But, in fact, there's something special about fly fishing in the UK, no matter where you do it. The River Test is probably one of the best places to fly fish in the world.
Only vessels holding an annually-issued Federal permit to fish commercially for Atlantic bluefin, bigeye, yellowfin and albacore tuna are legally allowed to sell their catch. By law, all commercially-caught catch can only be sold to a U.S. federally-licensed fish dealer.
How Does a Bluefin Tuna Command $3.2 Million? The Answer Begins in the Waters Off Oma. Caught off Honshu's northernmost tip, the 535-pound bluefin was brought to Toyosu Market's New Year auction, where Sushi Zanmai owner Kiyoshi Kimura claimed it with the morning's top bid.
