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News articles on Fish

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Mongabay.com news articles on fish in blog format. Updated regularly.

Census of marine life opens with 122,000 species
(7/1/2008) Discovering a new species can be the highlight of a biologist's career. Yet once a species enters the formal literature, complications may develop. The systen has been especially problematic because for centuries biologists have lacked the tools to construct a full and flexible list of the world's innumerable species. Using the Internet and hundreds of scientists around the world, the Census of Marine Life is attempting to take on this monumental task.


Large shark populations fall 97% in the Mediterranean
(6/12/2008) Populations of some shark species in the Mediterranean have plunged by more than 97 percent over the past 200 years, report researchers writing in the journal Conservation Biology. Several species are at risk of extinction.


Dried-up Colorado takes toll on giant Mexican fish
(6/8/2008) The Colorado River vanishes before it reaches the Sea of Cortez in all but the wettest years. Companies in California and the southwestern U.S. have diverted its once-vibrant flow to quench their thirst for water and power. Now, a new study in the April 2008 issue of the journal Biological Conservation reports that the dwindling of this major artery has changed the way some marine fish in the Gulf of California grow and develop.


Diversity in streams may brace Chinook salmon for climate change
(6/3/2008) Chinook salmon face a one-two punch. They have disappeared from several rivers in the western U.S. largely because of human interventions and some populations are threatened or endangered. Numbers of Chinook in California's Central Valley have dwindled by 88 percent in the past five years, a loss that closed fisheries for 2008 and may cost California's economy $167 million, according to the state Department of Fish and Game. On top of all this looms a second impact: These salmon will be in hotter water still because of climate change.


Greenpeace ship attacked by Turkish tuna fishermen during protest
(5/30/2008) Members of a Turkish tuna fishing boat attacked the Greenpeace ship Arctic Sunrise while the ship was engaged in a protest against overfishing. The incident occurred Friday in the Cypriot Channel and was reported to the Turkish Iskenderun Gulf Port Authorities.


Global warming to worsen ocean dead zones, hurt fisheries
(5/1/2008) Warming oceans will worsen oxygen-deficient or hypoxic dead zones, affecting ecosystems and fisheries, warn researchers writing in the journal Science.


Shark-repelling fishing gear in the works
(4/23/2008) Fishing gear that produces an electric field in sea water could help prevent sharks from becoming accidental bycatch, say scientists at NOAA.


Global warming could trigger dramatic Lake Tahoe changes within 10 years
(3/24/2008) Warming temperatures may cloud Lake Tahoe's legendary clear waters and put the lake's native species at risk, reports a new study from the University of California, Davis.


Hibernating fish discovered in the Antarctic
(3/5/2008) Scientists have discovered a fish that exhibits hibernation-like behavior in the icy waters of the Antarctic.


Feds flood the Grand Canyon to save endangered fish
(3/5/2008) Federal government officials unleashed a flood of water from Glen Canyon Dam in northern Arizona to help restore the Grand Canyon's ecosystem which has suffered as a result of changes caused by the dam.


New 'red list' seeks to stave off global seafood collapse
(3/3/2008) Over-fishing and destructive fishing practices have had a considerable effect on oceanic ecosystems. In 2006 a highly-reported study found that without drastic measures all wild seafood will disappear from the oceans in 50 years. Greenpeace, working against such a crash, has started a campaign that highlights 'red fish'. The twenty-two 'red' species are seafood that consumers and suppliers (including supermarkets) should avoid due to their plummeting populations and/or the damage caused by harvesting them.


Widespread butterflyfish may go extinct due to global warming, pollution
(2/24/2008) The Chevroned Butterflyfish, a colorful fish found in tropical oceans around the world, faces extinction due to overexploitation, pollution and climate change, report researchers writing in the journal Behavioural Ecology and Sociobiology. Despite its widespread distribution, the species could be doomed by its specialized feeding habitats: the Chevroned Butterflyfish (Chaetodon trifascialis) feeds on only one type of coral.


Photos of bizarre creatures discovered in Antarctica
(2/19/2008) Researchers aboard the Aurora Australis, an Australian vessel, have discovered a trove of strange creatures on the sea floor near East Antarctica.


Tuna may go the way of cod: a collapsed fishery
(2/18/2008) The collapse of the cod fishery could provide important lessons to prevent a similar fate for some tuna populations, say researchers presenting at the American Association for the Advancement of Science (AAAS) Annual Meeting in Boston on February 18.


Mysteries of the Great White Shark unveiled
(2/17/2008) The Great White Shark has always been a creature of mystery. The world's largest shark has long fascinated humanity from the novel and film Jaws to recent sumptuous footage of the sharks catching sea lions in Planet Earth. The behemoth, who at times can reach seven meters in length, has also become famous for occasionally attacking swimmers and surfers, though scientists believe the sharks do not intentionally hunt humans. However, the great predator's behavior and lifecycle remains mostly mysterious to science. Some of these mysteries are just now being unraveled thanks to the Tagging of Pacific Predators (TOPP) program.


Digital maps and mathematical analysis could reduce fishing bycatch
(2/16/2008) Images of dolphins and turtles ensnared in tuna nets are a heart-wrenching reminder of the impact of fisheries on ocean bio-diversity. Known in fisheries science as ‘by-catch,’ this killing of non-target species is a complex problem that has resisted easy answers.


Ocean trawling impacts can be seen from space
(2/16/2008) Bottom trawling, an industrial fishing method that drags large, heavy nets across the seafloor stirs up huge, billowing plumes of sediment on shallow seafloors that can be seen from space.


Overfishing may hurt Amazon forest trees
(2/5/2008) Overfishing is reducing the effectiveness of seed dispersal by fish in the Brazilian Pantanal, reports Nature. The research suggests that fishing practices can affect forest health.


Global warming will diminish fish catch in the Bering sea
(1/16/2008) One half of the fish caught in the U.S. annually--and almost a third worldwide--come from the Bering Sea. Yet, this vast resource is increasingly threatened by climate change. A recent study, published in Marine Ecology Progress Series, showed that global warming will greatly affect the Bering Sea's phytoplankton, the cornerstone of the sea's rich ecosystem.


Fish farms are killing wild salmon in British Columbia
(12/13/2007) Parasitic sea lice infestations caused by salmon farms are driving nearby populations of wild salmon toward extinction, reports a study published in the December 14 issue of the journal Science.


Piranhas originated when Amazon was flooded by seawater
(12/4/2007) South America's piranha family of fish -- notorious as eaters of flesh -- can be traced back to a single ancestor which dispersed when the Amazon was flooded by seawater some five million years ago, report researchers from the Institut de Recherche Pour le Développement (IRD). Today piranhas are exclusively freshwater fish found from the Orinoco River basin in Venezuela to the Paraná in Argentina.


Scientists find fish that literally lives in trees
(10/17/2007) Scientists have found a fish that literally lives in trees, according to research published in The American Naturalist and highlighted in New Scientist Magazine.


World's first sustainable tuna fishery certified
(9/9/2007) The world's first certified sustainable tuna fishery was announced today, a move that could help save one of the world's most valuable fish -- and the fishing industry that relies on it -- from extinction.


Overfishing takes toll on Bluefin tuna
(8/6/2007) Overfishing has caused dramatic shifts in bluefin tuna populations that have pushed the species closer towards extinction in some areas, reports a series of studies by the Census of Marine Life (CoML) and other researchers.


Jumbo squid invade California waters, affecting fish populations
(7/25/2007) Jumbo squid (Dosidicus gigas) are invading California waters, putting commercial fish populations at risk, reports a study published in Proceedings of the National Academy of Sciences.


Fish cultivate gardens of algae
(7/24/2007) Damselfish cultivate "gardens" of algae, according to a study published last October in the journal Biology Letters.


In Alaska, fishing industry drives marine conservation
(7/24/2007) Alaska's fisheries are some of the richest in the world, with fishermen harvesting hundreds of millions of dollars' worth of salmon, crab, herring, halibut, pollock, and groundfish every year. However, such bounty has not always been the case. Over-exploitation and poor fisheries management in the 1940s and 1950s took a heavy toll on the industry. Born of this difficult origin, today Alaska sets the bar in fisheries management. Unusually for natural resource management, industry is leading the way, relying on dialog with scientists to determine catch levels and where to designate "no-fishing zones", while pushing for certification standards for sustainable seafood products. These efforts are coordinated by the Marine Conservation Alliance (MCA), an industry-backed nonprofit based in Juneau, Alaska. In July 2007, David Benton, executive director of the Marine Conservation Alliance, spoke with mongabay.com about MCA's work in Alaska.


Fines on bycatch could help make conservation groups, industry accountable
(7/18/2007) Assessing fines on illegal bycatch could help clean up the fishing industry, reports a new study published in the August issue of Frontiers in Ecology and the Environment.


Foreign fishing fleets deplete African fish stocks
(7/18/2007) Heavily subsidized foreign fishing fleets are depleting coastal fish stocks of poor Africa countries, reports The Wall Street Journal.


"Living fossil" fish captured in Zanzibar
(7/16/2007) Fishermen in Zanzibar have caught a coelacanth, reports Reuters.


How long does it take reef fish to recover from overfishing?
(7/11/2007) Recovery of fish populations from overfishing can take decades, reports a new study based on 37 years of observations.


$11B Amazon rainforest dam gets initial approval
(7/10/2007) The Brazilian government has given preliminary go-ahead on a massive Amazon dam project that environmentalists and scientists say could be a potential ecological disaster.


How to save the world's oceans from overfishing
(7/8/2007) Global fishing stocks are in trouble. After expanding from 18 millions tons in 1950 to around 94 million tons in 2000, annual world fish catch has leveled off and may even be declining. Scientists estimate that the number of large predatory fish in the oceans has fallen by 90 percent since the 1950s, while about one-quarter of the world's fisheries are overexploited, depleted, or recovering from depletion. Despite these dire trends, the situation is changing. Today some of the world's largest environmental groups are focused on addressing the health of marine life and oceans, while sustainable fisheries management is at the top of the agenda for intergovenmental bodies. At the forefront of these efforts is Mike Sutton, director of the Monterey Bay Aquarium's conservation program: the Center for the Future of the Oceans. The aquarium, which has long been recognized as one of the world's most important marine research facilities, is pioneering new strategies for protecting the planet's oceans. Sutton says the approach has four parts: establishing new marine protected areas, pushing for ocean policy reform, promoting sustainable seafood, and protecting wildlife and marine ecosystems.


Man-eating piranha are actually cowards
(7/1/2007) Despite their reputations as aggressive blood-thirsty carnivores, piranha schooling behavior is a defensive measure to protect against predators rather than an offensive hunting maneuver, reports new research presented at the Royal Society's summer science exhibition in London. Piranhas face many predators in their Amazon habitat, including caiman, freshwater dolphins, and giant fish like the pirarucu or arapaima.


Melting Antarctic icebergs help increase biodiversity, slow climate change
(6/21/2007) Icebergs breaking off Antarctica are unexpected hotspots of biological productivity and have a surprising role in climate change, reports a new study published in the journal Science.


Trade in sawfish banned
(6/11/2007) Trade restrictions for the endangered sawfish have been approved at the Convention on International Trade in Endangered Species (CITES) meeting the The Hague. All seven species of sawfish has been added to Appendix I of the convention, banning international commercial trade. One species, found in Australia, was added to Appendix II, restricting trade to live animals for conservation purposes.


Brazil debates $11B Amazon dam project
(6/10/2007) The eternal tension between Brazil's need for economic growth and the damage that can cause to the environment are nowhere more visible than here in this corner of the western Amazon. Now a proposal to build an $11 billion hydroelectric project here on the Madeira River, which may have the world's most diverse fish stocks, has set off a new controversy.


Sharks do not win CITES protection
(6/8/2007) Two endangered species of sharks failed to win protection at the Convention on International Trade in Endangered Species (CITES) meeting in The Hague.


Amazon tribe blocks major Brazilian highway
(6/8/2007) Indigenous Amazonians have blocked a major highway in the Brazilian state of Mato Grosso to protest a series of hydroelectric dams planned on the Xingu river, one of the Amazon's largest tributaries, according to Brazzil Mag and Survival International.


Shark fin does not cure cancer
(6/3/2007) Shark cartilage, long believed in traditional medicine to be an anti-cancer agent, confers no health benefits in lung cancer survival reports an extensive study presented at the 43rd annual meeting of the American Society of Clinical Oncology. The lead author said the findings cast major skepticism on shark cartilage products that are being sold for profit and have no data to support their efficacy as cancer-fighting agent.


Shark has virgin birth
(5/23/2007) A captive hammerhead shark gave birth to a pup without mating, reported researchers on Wednesday. It is the first time that parthenogenesis, as virginal birth as called, has been observed in a shark.


Photo of rare Indonesian coelacanth
(5/22/2007) Reuters has published photos taken of the rare coelacanth captured off the northern coast of the Indonesian island of Sulawesi on May 19, 2007. The coelacanth is fish species that dates back more than 400 million years in the fossil record.


Rare coelacanth captured in Indonesia
(5/20/2007) An Indonesian fisherman caught a coelacanth, a species so ancient it is called a 'living fossil', off the coast of Sulawesi, Indonesia, according to the Associated Press. The fisherman managed to keep the specimen alive for 17 hours in a pool before it expired.


Marine reserves help damaged coral reefs recover
(5/14/2007) Marine reserves can help coral reefs damaged by overfishing, disease, and bleaching caused by high temperatures, reports a new study published in Proceedings of the National Academy of Sciences.


Deal to end destructive bottom trawling reached
(5/7/2007) Governments have reached a landmark agreement to end high seas bottom trawling in nearly a quarter of the world's oceans. Environmentalists say bottom trawling, which destroys reefs and depletes slow-growing fish species, is one of the world's most destructive fishing practices.


Coral reef fish return home after drifting the seas
(5/3/2007) Most coral reef fish larvae return to their 'home' reefs after spending weeks to months maturing in the open ocean, reports a new study published in the journal Science. The findings improve the understanding of coral reef ecosystems and have implications for marine conservation efforts.


Deep sea fish growing slower due to global warming
(4/23/2007) Changes in ocean temperature have altered the growth rates of commercially harvested fish over the past century, according to a new study published in this week's early online edition of the Proceedings of the National Academy of Sciences (PNAS).


Herring fish restored to Bronx River in New York City
(4/5/2007) Building on last year's first-ever successful stocking of river herring in the Bronx River, an estimated 400 additional fish were released today in an ongoing effort to establish a breeding population of these native fish in one of the nation's most urbanized waterways. The release, which took place on the grounds of the Bronx Zoo, is part of a partnership among a diverse group of officials, biologists and citizen's groups to restore the Bronx River, the only remaining fresh water river within New York City's borders.


Global warming could hurt salmon fisheries in Pacific Northwest
(4/2/2007) Global warming could cause Chinook salmon populations in Washington state to decline 20-40 percent by 2050 according to a new study published in the online early edition of PNAS. The researchers urge policymakers to focus on restoration of lower elevation habitats in order to reduce the expected impact of climate change on salmon populations.


Overfishing of sharks causing shellfish decline
(3/29/2007) Overfishing of large sharks is reducing the abundance of shellfish reports a study published in the March 30 issue of the journal Science. A team of Canadian and American biologists has found that population declines in large predatory shark species -- including bull, great white, dusky, and hammerhead sharks -- due to overfishing has led to a boom in their ray, skate, and small shark prey species along the Atlantic Coast of the United States. Now these smaller species are depleting commercially important shellfish.



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