Fish extinction. Medical search. Frequent questions

If we allow these fish to go extinct, we've allowed the deterioration of the streams and rivers," Moyle said, noting the same waterways also supply clean drinking water to people. (upi.com)
A recent survey of fishing communities in the state of Amazonas, Brazil, found that the arapaima is already extinct in some parts of the Amazon basin . (livescience.com)
Salmon and other native freshwater fish in California will likely become extinct within the next century due to climate change if current trends continue, ceding their habitats to non-native fish, predicts a study by scientists from the Center for Watershed Sciences at the University of California, Davis. (universityofcalifornia.edu)
Fish requiring cold water, such as salmon and trout, are particularly likely to go extinct, the study said. (universityofcalifornia.edu)
This includes 80 species of freshwater fish that were declared extinct by the IUCN Red List of Threatened Species, 20 percent of them in the year 2020. (salon.com)
Unfortunately, listing these iconic fish under the Act has not prevented them from being at high risk of going extinct. (counterpunch.org)
So it is alarming that we are losing freshwater fish species faster than we figure out why they are going extinct. (water-future.org)
Over 57 North American freshwater fish have gone extinct since 1889. (water-future.org)
Whereas, in the oceans only about three fish species have gone extinct over the last century ( though the exact number is controversial ). (water-future.org)
The extinct Brisbane River cod was popular for fishing - it could grow more than 1 metre in length and was reportedly good eating. (water-future.org)
Knowing why these fish species go extinct is important. (water-future.org)
The global population of megafish down by 94% , and 16 freshwater fish species were declared extinct last year. (fasterthanexpected.com)
Indeed, 80 species of freshwater fish have already been declared 'Extinct' by the IUCN Red List of Threatened Species , including 16 in 2020 alone. (wwfcee.org)
Conservative estimates of population viability suggested that 1800 species, which accounted for 20% of all freshwater fishes, had become extinct or on the verge of extinction in 1992 2 . (nature.com)

Overfishing and changing sea temperatures are pushing seabirds to the brink of extinction, according to new data on the world's birds. (bbc.com)
Pollution and climate change have put 12 indigenous fish species on the brink of extinction in India. (planetsave.com)
Over 440 tree species are on the brink of extinction, meaning they have fewer than 50 individuals remaining in the wild, the report reveals. (org.in)
These gentle giants have been swimming around since the age of the dinosaurs, but 23 of the 27 species are now on the brink of extinction. (wwfcee.org)

That's according to a recent report put together by 16 global conservation organizations, which estimated that roughly one-third of the world's 18,075 freshwater fish species face possible extinction. (salon.com)
The report, which was published by groups including the World Wide Fund for Nature (WWF) and Global Wildlife Conservation, argues that climate change, pollution, the introduction of invasive species, the destruction of habitats and overly aggressive draining and damming of the world's rivers, lakes and wetlands have played a role in the decline of freshwater fish species. (salon.com)
Nowhere is the world's nature crisis more acute than in our rivers, lakes and wetlands, and the clearest indicator of the damage we are doing is the rapid decline in freshwater fish populations. (salon.com)
Two-thirds the world's polar bears could be threatened with extinction by 2050 due to melting sea ice resulting from global warming, said U.S. government scientists Friday. (mongabay.com)
Fragments of Extinction , an interdisciplinary project, led by Italian eco-acoustic composer David Monacchi, is collecting, studying, and disseminating hi-definition 24-hour sound portraits of the world's undisturbed primary equatorial forests, advocating for the importance of taking them as object of protection and patrimonialisation. (iucn.org)
The report by 16 global conservation organisations, called The World's Forgotten Fishes, said that global populations of freshwater fish were in freefall . (fasterthanexpected.com)
Most of the world's rivers are now dammed in parts, have water extracted for irrigation or have their natural flows disrupted, making life difficult for freshwater fish. (fasterthanexpected.com)
Freshwater fishes account for over half of the world's total fish species. (org.in)
In 2021, Marseille, France, hosted the World Conservation Congress - held every four years and regarded as the largest such congregation - during which conservationists heard with shock the findings of a study: "Over 70 wild relatives of some of the world's most important crops are threatened with extinction. (org.in)
23 February 2021- The world's dazzlingly diverse freshwater fish are critical for the health, food security and livelihoods of hundreds of millions of people, but they are under ever increasing threat with one in three already threatened with extinction, according to the World's Forgotten Fishes Report published today by 16 global conservation organisations. (wwfcee.org)
There are18,075 freshwater fish species, accounting for over half of the entire world's fish species and a quarter of all vertebrate species on Earth. (wwfcee.org)
The World's Forgotten Fishes Report highlights the devastating combination of threats facing freshwater ecosystems - and the fish that live in them - including habitat destruction, hydropower dams on free flowing rivers, over abstraction of water for irrigation, and domestic, agricultural and industrial pollution. (wwfcee.org)

A mass extinction of fish 360 million years ago hit the reset button on Earth's life, setting the stage for modern vertebrate biodiversity, a new study reports. (sciencedaily.com)
Extinction events remove a huge amount of biodiversity," Coates said. (sciencedaily.com)
The assessment by the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services ( IPBES ) has found that around 1 million animal and plant species are now threatened with extinction . (cosmosmagazine.com)
The extinction of non-avian dinosaurs 65 million years ago is a perpetual topic of fascination, and lasting debate has focused on whether dinosaur biodiversity was in decline before end-Cretaceous volcanism and bolide impact. (nature.com)
In freshwater bodies like lakes and rivers that occupy less than 1 per cent of the planet's surface space but host 25 per cent of all vertebrate species, making them the densest biodiversity, one in three fish species is on the verge of extinction. (org.in)
One of the initiative's goals is to enhance wildlife habitat and improve biodiversity -- to keep species from reaching the point where they are in danger of extinction or are too far gone to save. (americanews.news)

The Devonian Period, which spanned from 416 to 359 million years ago, is also known as the Age of Fishes for the broad array of species present in Earth's aquatic environments. (sciencedaily.com)
Scientists have long theorized that the Late Devonian Kellwasser event -- considered to be one of the "Big Five" extinctions in Earth's history -- was responsible for a marine invertebrate species shake-up. (sciencedaily.com)
The end-Permian extinction is associated with a mysterious disruption to Earth's carbon cycle. (greencarcongress.com)
Collectively, these results are consistent with the instigation of Earth's greatest mass extinction by a specific microbial innovation. (greencarcongress.com)
Earth's most severe mass extinction, the "Great Dying," began 251.94 million years ago at the end of the Permian period, with the loss of more than 90% of marine species. (skepticalscience.com)

The mass extinction scrambled the species pool near the time at which the first vertebrates crawled from water towards land, scientists report. (sciencedaily.com)
The mass extinction scrambled the species pool near the time at which the first vertebrates crawled from water towards land, University of Chicago scientists report. (sciencedaily.com)
Mutated ferns point to a new culprit in prehistoric mass extinctions, researchers say. (cosmosmagazine.com)
Researchers have discovered that it wasn't just erupting volcanoes, massive amounts of carbon dioxide, oceans full of sulphuric acid, runaway global warming and a thinning ozone layer that caused the end-Triassic mass extinction 201 million years ago. (cosmosmagazine.com)
Four out of the five mass extinctions that occurred over the past 600 million years have been linked to huge and prolonged bursts of volcanic activity. (cosmosmagazine.com)
The scientists discovered that in spores and pollen collected from some areas in the highly volcanic period leading up to the mass extinction as many as 56% appeared deformed, suggesting very high rates of mutation. (cosmosmagazine.com)
A normal fern spore compared with mutated ones from the end-Triassic mass extinction event. (cosmosmagazine.com)
Marine extinction intensity during the Phanerozoic % Millions of years ago (H) K-Pg Tr-J P-Tr Cap Late D O-S The Late Devonian extinction consisted of several extinction events in the Late Devonian Epoch, which collectively represent one of the five largest mass extinction events in the history of life on Earth. (wikipedia.org)
A second mass extinction called the Hangenberg event, also known as the end-Devonian extinction, occurred 359 million years ago, bringing an end to the Famennian and Devonian, as the world transitioned into the Carboniferous Period. (wikipedia.org)
We know from paleoclimatology that life on Earth has ebbed and flowed over the ages, including surviving five epic global mass extinction events. (thinkorswim.ie)
And, not surprisingly, many of the media reports on Pimm's paper underscored that the Earth is now facing a "sixth extinction" comparable to the five earlier mass extinctions in history. (3quarksdaily.com)
Mass extinctions. (blogspot.com)
Of some 18 major and minor mass extinctions since the dawn of complex life, most happened at the same time as a rare, epic volcanic phenomenon called a Large Igneous Province (LIP). (skepticalscience.com)
But those rock dates presented science with a new puzzle: why was the mass extinction event much shorter than the eruptions? (skepticalscience.com)
Burgess noticed that the beginning of the mass extinction, as well as a jolt to the carbon cycle and abrupt climate warming, coincided exactly with a switch in the style of volcanic activity in the Siberian Traps. (skepticalscience.com)
In this time there was some stress to life in the Northern Hemisphere, but no mass extinction. (skepticalscience.com)
While other scientists have proposed that an array of killers may have been involved in the end-Permian mass extinction, from mercury poisoning to ultraviolet rays and ozone collapse to acid rain, Burgess argues that it was principally greenhouse gas emissions triggered by magma intrusions that caused the extinction through abrupt global warming and ocean acidification. (skepticalscience.com)
The first is: right before the onset of the mass extinction we have evidence for a massive input of isotopically light carbon into the marine system. (skepticalscience.com)
Scientists are now bringing out specific studies to declare extinction of species almost on a daily basis, which makes clear that the planet is hurtling towards mass extinction. (org.in)
Only in the past hundreds of millions of years have animals started to develop, and you can clearly see the different cycles of mass extinctions (often due to climate change) that are followed by life explosions (when many ecological niches open up to new organisms). (lu.se)

As you might imagine, estimating the expected extinction of species is a difficult process, because so many things are involved. (scienceblogs.com)

The report also pointed out that, since 1970, populations of freshwater mega-fish (those which weigh more than 60 pounds) have fallen by a "catastrophic" 94 percent and those of freshwater migratory fish have fallen by 76 percent. (salon.com)
In September the conservation organization revealed that population sizes of "mammals, birds, amphibians, reptiles and fish" have declined by 68 percent since 1970. (salon.com)
Populations of migratory freshwater fish have plummeted by 76% since 1970, and large fish - those weighing more than 30kg - have been all but wiped out in most rivers. (fasterthanexpected.com)
Populations of migratory freshwater fish have fallen by 76 per cent since 1970 and large freshwater species, such as the catfish, by a catastrophic 94 per cent. (org.in)

In particular, freshwater fish, which humans have used for food, sport and as pets for millennia, are in the middle of an ecological crisis of our doing. (salon.com)

The researchers found that, of 121 native fish species, 82 percent are likely to be driven to extinction or very low numbers as climate change speeds the decline of already depleted populations. (universityofcalifornia.edu)
Climate change and human-caused degradation of aquatic habitats is causing worldwide declines in freshwater fishes, especially in regions with arid or Mediterranean climates, the study said. (universityofcalifornia.edu)
Fishing pressures and ocean changes caused by climate change are reducing food supply for the chicks of seabirds, while adults receive little protection when they fly over areas of the ''high seas'' that do not fall under the jurisdiction of any country, says BirdLife International. (bbc.com)
More than 830 Extinction Rebellion climate change activists have now been arrested from various locations across the capital. (londonlovesbusiness.com)
On Thursday a YouGov poll suggested that public opinion had now swung against the Extinction Rebellion climate change protesters. (londonlovesbusiness.com)
Researchers at MIT are proposing that the end-Permian extinction-the period some 252 million years ago when about 90% of all species on Earth were suddenly wiped out-may have been instigated by an explosive bloom of methane-producing archea ( Methanosarcina ) in the oceans, which spewed prodigious amounts of methane into the atmosphere, disrupting the carbon cycle and devastatingly changing the climate and chemistry of the oceans. (greencarcongress.com)
The problems are diverse and include pollution, overfishing and destructive fishing practices, the introduction of invasive non-native species, climate change and the disruption of river ecologies . (fasterthanexpected.com)
Many of those extinctions were also accompanied by abrupt climate warming, expansion of ocean dead zones and acidification, like today. (skepticalscience.com)
In addition, freshwater fish are also at risk from overfishing and destructive fishing practices, the introduction of invasive non-native species and the impacts of climate change as well as unsustainable sand mining and wildlife crime. (wwfcee.org)

But nowadays, thanks to deforestation, habitat loss, and other factors, the "death rate" has increased to an estimated 100 to 1,000 extinctions per million species-years. (3quarksdaily.com)
Species extinctions, now happening about 1,000 times faster than the natural rate, are perhaps the greatest existential threat to life on Earth. (scmp.com)

DAVIS, Calif., Nov. 20 (UPI) -- Most of California's native salmon, steelhead and trout species face extinction this century without quick action to provide proper habitats, a study found. (upi.com)

Some populations have already been driven to extinction. (npr.org)
At least 680 vertebrate species has been driven to extinction since the 16th century. (cosmosmagazine.com)

Our fish need cold, clean water to survive, but they're getting less and less of it," said University of California, Davis, conservation biology professor Peter Moyle, the state's leading salmon expert. (upi.com)
However, the researchers also uncovered some good news: In communities where arapaima fishing is regulated, the species is actually thriving, giving the researchers hope that conservation of the species is still possible. (livescience.com)
Two conservation scholars break down what de-extinction looks like - and the debate over whether it could do any good. (theconversation.com)
This word comes from a Swiss-based group called the International Union for the Conservation of Nature (IUCN), which maintains the so-called Red List of species threatened with extinction. (npr.org)
The project Fragments of Extinction will be hosted in the Protected Planet Pavilion at the IUCN World Conservation Congress 2016 in Hawaii, where it will be possible to experience selected sound excerpts collected in Africa, Borneo and Amazon, specifically mastered for head-tracked headphones. (iucn.org)
A further 37% of freshwater fish that have been assessed by the International Union for the Conservation of Nature are also classified as being under threat. (water-future.org)
Conservation scientists, like ourselves, are increasingly trying to understand how the interplay among different human pressures causes extinction . (water-future.org)
But we still need urgent conservation efforts to save these tiny porpoises from extinction. (kget.com)
The minimum viable population (MVP) size has been compared for a wide range of organisms in conservation biology, but a limited number of studies investigated it for freshwater fishes, which exhibit diverse life history strategies. (nature.com)
The Endangered Species Act has been incredibly successful at both preventing extinctions and at inspiring the diverse partnerships needed to meet our growing 21st century conservation challenges. (americanews.news)
Author affiliations: Reptile, Amphibian & Fish Conservation lations, or geographic proximity to known outbreak sites. (cdc.gov)

SNIP: Freshwater fish are under threat, with as many as a third of global populations in danger of extinction , according to an assessment. (fasterthanexpected.com)

Armored placoderms such as the gigantic Dunkleosteus and lobe-finned fishes -- similar to the modern lungfish -- dominated the waters, while ray-finned fishes, sharks, and tetrapods were in the minority. (sciencedaily.com)
There are more than a thousand species of sharks and rays in the world, and nearly a quarter of them are threatened with extinction, according to a new study. (npr.org)
But the 25 percent risk of extinction is a surprisingly large number, Fordham says, adding that "the rays are actually worse off than the sharks. (npr.org)
Rays include mantas and skates, but also fish that look more like sharks - such as the sawfish , which has a snout shaped like a double-sided saw. (npr.org)
When Fordham and her colleagues dug into the data from catch reports from various fisheries, they discovered that more rays have been fished out of the water than sharks, though rays don't get as much attention. (npr.org)
I think it's important to note that overfishing…is a major problem for most marine fish, not just sharks," Fordham explains. (thediplomat.com)
Sharks are being fished faster than they can reproduce and their numbers are declining - and fast. (greenlivingguy.com)
If we keep fishing at this rate, soon there will be no more sharks swimming in our waters and Shark Week will be our only chance to see these amazing creatures. (greenlivingguy.com)
We want the U.S. government to limit fishing of the most threatened sharks. (greenlivingguy.com)

For example, IUCN Criterion D categorizes the level of threat based on a set of threshold population sizes, whilst Criterion E uses the projected risk of extinction faced by a species over a specified period (IUCN 2005). (nature.com)

While some early estimates on 2019 returns are circulating, work is ongoing to finalize the scientific evaluation around the fish migration, spawning and mortality data, which will be released once completed,' Louise Girouard told CBC in an email. (cbc.ca)

Twenty of 31 species of prized fish are in sharp decline, including the Sacramento River winter run of Chinook salmon, coastal Coho salmon and the Sierra Nevada golden trout, the San Francisco Chronicle reported. (upi.com)
Agnathans (jawless fish) were in decline long before the end of the Frasnian and were nearly wiped out by the extinctions. (wikipedia.org)
The circumstances of each also underscore how human activity can drive species decline and extinction, by contributing to habitat loss, overuse and the introduction of invasive species and disease. (americanews.news)

Yet today, at the beginning of the current extinction crisis, the 'paleo-choirs' of the natural world are undergoing silent but real and lasting damage. (iucn.org)
Stemming this extinction crisis is a central component of the Biden-Harris administration's America the Beautiful initiative, a locally led and voluntary, nationwide effort to conserve, connect, and restore 30 percent of lands and waters by 2030. (americanews.news)

Some were one-off… as would be the "anthropocene" extinction that we're causing ourselves, right now, through the powerful impact of human civilization. (blogspot.com)

Can anything stop the slide of the species towards extinction? (theconversation.com)
But freshwater fish continue to be undervalued and overlooked - and thousands of species are now heading towards extinction. (wwfcee.org)

Shark Finning: Appetite for Extinction? (thediplomat.com)

But an analysis of the vertebrate fossil record by Sallan and Coates, pinpointed a critical shift in their diversity to the Hangenberg extinction event 15 million years later. (sciencedaily.com)

At least some dinosaur groups, however, did endure long-term declines in morphological variability before their extinction. (nature.com)
Similarly, Australian lungfish are threatened by habitat alteration and loss (e.g. due to dams and weirs), introduced fish species and other factors that have caused declines in reproduction and recruitment success (Arthington 2009, Hughes et al 2015). (water-future.org)
These species extinctions highlight the importance of the ESA and efforts to conserve species before declines become irreversible. (americanews.news)

Previously, estimates of the earlier extinction had been made using fossils of invertebrates such as mollusks and clams, which are far more abundant. (sciencedaily.com)

Frozen zoos struggle to preserve genetic material from fish. (theconversation.com)
Frozen zoos are trying to create archives of genetic material to prevent total extinctions. (theconversation.com)

Tucson, Arizona - A long-standing debate about the source of the asteroid that impacted the Earth and caused the extinction of the dinosaurs has been put to rest thanks to the Chelyabinsk meteorite that disintegrated over Russia in February 2013, a new paper published in the journal Icarus shows. (scitechdaily.com)
We know the most famous extinction event, the demise of the dinosaurs, was caused (all or mostly) by a huge asteroid that struck the Yucatan Peninsula, 65 million years ago. (blogspot.com)

Over-fishing, habitat loss and pollution all likely contributed to its demise (Pusey et al 2004). (water-future.org)

But between the latest Devonian Period and the subsequent Carboniferous period, placoderms disappeared and ray-finned fishes rapidly replaced lobe-finned fishes as the dominant group, a demographic shift that persists to today. (sciencedaily.com)
The Devonian period is known as the Age of Fishes, but it's the wrong kind of fish," Sallan said. (sciencedaily.com)
The term primarily refers to a major extinction, the Kellwasser event, also known as the Frasnian-Famennian extinction, which occurred around 372 million years ago, at the boundary between the Frasnian stage and the Famennian stage, the last stage in the Devonian Period. (wikipedia.org)

But while this supplemental breathing technique helps the fish survive in its native habitat , it also makes the arapaima much easier to catch, according to the researchers. (livescience.com)
A commercially important species, arapaima are traditionally fished by local Amazonian communities , a practice that's largely unregulated, the researchers said. (livescience.com)
To find out how this lack of regulation might be affecting the giant fish, the researchers interviewed local fishers operating within a 650-square-mile (1,683 square kilometers) floodplain in northwestern Brazil. (livescience.com)
In 17 percent of the communities, the fish were deemed "overexploited," according to the researchers. (livescience.com)

In contrast, only 19 percent of the 50 non-native fish species in the state face a similar risk of extinction. (universityofcalifornia.edu)
A species at higher risk of extinction is a worrying alarm call that action needs to be taken now. (bbc.com)
Does eating more fish link to a higher melanoma risk? (cosmosmagazine.com)
The assessment evaluated 60,000 tree species and found that 30 per cent are at the risk of extinction. (org.in)

40% of amphibian species and more than a third of all marine mammals are also threatened with extinction. (cosmosmagazine.com)
Emerging fungal diseases can drive amphibian species to ized ranges have been restricted to a few populations of local extinction. (cdc.gov)
online Technical Appendix amphibian populations to local extinction ( 1 , 2 ). (cdc.gov)

Speaking about the fishermen who engage in the crueler form of finning - as opposed to fishing and making use of the full animal - Karl Goodsell, founder and director of Positive Change for Marine Life , tells The Diplomat , "They'll go out in dingy little boats in places like South America and the South Pacific. (thediplomat.com)

Freshwater fish matter to the health of people and the freshwater ecosystems that all people and all life on land depend on. (salon.com)

Some consider the extinction to be as many as seven distinct events, spread over about 25 million years, with notable extinctions at the ends of the Givetian, Frasnian, and Famennian stages. (wikipedia.org)
In other words, many extinction events probably involve plain old bad luck, which happens to come along when a population was already depleted. (scienceblogs.com)
While it is reasonable to assign the final one or two stages of extinction to expected bad luck owing to normal fluctuations in numbers and randomness of events, it is not so easy to list the reasons why a population of some animal would become unsustainably small to begin with. (scienceblogs.com)
Evidence is growing that extinction events - many or most of them - seem to follow a cyclical rhythm of every 26 to 30 million years, with varying severity, and I have discussed this cycle - with fascinating theories - elsewhere. (blogspot.com)

Disappearing fish will include not only obscure species of minnows, suckers and pupfishes, but also coho salmon, most runs of steelhead trout and Chinook salmon, and Sacramento perch," Moyle said. (universityofcalifornia.edu)
This permit is required under the Endangered Species Act whenever a listed species may be "harmed, harassed or killed…" during a proposed agency action - in this case, the steelhead fishing season. (counterpunch.org)
The state's action shutters steelhead fishing on the Clearwater, Salmon and Little Salmon Rivers, as well as the Idaho bank of the Snake River. (counterpunch.org)
Adding to Idaho's salmon and steelhead woes, Governor Otter recently signed an extension of Bonneville Power Administration's (BPA) Fish Accords, guaranteeing the state's continued support for more of the same failed policies that have led to present conditions. (counterpunch.org)
The status quo approach to fish management is badly broken, and unless we make drastic changes, both salmon and steelhead will wink out. (counterpunch.org)

Sturgeon and other migratory fish species represent the historical, economic and natural heritage of the Danube. (wwfcee.org)

We also block of rivers for dams, preventing fish from migrating to their spawning grounds. (water-future.org)
Fish typically depend on these natural cycles to cue their migrations up and down rivers to their feeding or spawning grounds. (water-future.org)
Sometimes the rivers just dry up, not many fish can survive in a dry river. (water-future.org)

The California Trout fish advocacy group, which commissioned the study, said it would use the results to try to persuade legislators and Gov. Arnold Schwarzenegger to direct the state Department of Fish and Game to provide adequate freshwater and habitats. (upi.com)
But these huge fish are quickly disappearing from Brazilian waterways, according to a new study. (livescience.com)
A new study has found that rising human carbon dioxide emissions may in fact be affecting the brains and central nervous systems of sea fishes, decreasing their inherent ability to survive. (planetsave.com)
In this study, the MVP size and population growth rate of 36 fish species in the Yangtze River were estimated and compared with their life-history traits. (nature.com)

Federal government scientists told the Pacific Salmon Commission there is a 'meaningful chance of extinction' for three salmon runs after the Big Bar landslide, according to a copy of a PowerPoint presentation, dated Oct. 16, obtained by CBC News. (cbc.ca)
In an attempt to save this year's salmon runs, more than 60,000 fish were captured, stored in tanks, and then lifted past the obstruction by helicopter over the summer. (cbc.ca)
Thirty years ago, the Shoshone-Bannock Tribes led the effort to save Snake River sockeye salmon from extinction. (nrdc.org)

The extinction seems to have only affected marine life. (wikipedia.org)

The species are listed in order of vulnerability to extinction, with No. 1 being the most vulnerable. (universityofcalifornia.edu)
The iconic bird is listed as vulnerable to extinction for the first time. (bbc.com)

If present trends continue, much of the unique California fish fauna will disappear and be replaced by alien fishes, such as carp, largemouth bass, fathead minnows and green sunfish," said Peter Moyle, a professor of fish biology at UC Davis who has been documenting the biology and status of California fish for the past 40 years. (universityofcalifornia.edu)
These fish are part of the endemic flora and fauna that makes California such a special place," said Moyle. (universityofcalifornia.edu)
Rob Puddicombe, who scattered an antidote to rat poison on an island off California, thwarting efforts to exterminate the invasive rodents and thus prevent the extinction of native wildlife. (scmp.com)

People are putting nature in more trouble now than at any other time in human history, with extinction looming over 1 million species of plants and animals, scientists said Monday. (wfla.com)

IUCN's Global Species Programme and Species Survival Commission are currently assessing the state of extinction among freshwater fish. (org.in)

Everything was hit, the extinction was global," said Lauren Sallan, University of Chicago graduate student and lead author of the paper. (sciencedaily.com)
Information about these species has been hard to come by, he says, though he and others have been scouring global fishing records to get a sense of the problem's magnitude. (npr.org)

Finally, if fish populations get really small, they can become inbred, which contributes to their demise. (water-future.org)

Hutchings 17 argued that population growth rate ultimately determined fish population's ability to sustain under fishing mortality and to recover after its collapse. (nature.com)
The Service is actively engaged with diverse partners across the country to prevent further extinctions, recover listed species and prevent the need for federal protections in the first place," said Martha Williams, Service Principal Deputy Director . (americanews.news)

We know what threatens the desert tortoise, and the Fish and Wildlife Service should act immediately to address those threats. (biologicaldiversity.org)
Primary threats leading to its extinction were the loss of mature forest habitat and collection. (americanews.news)

And the giant fish's numbers are depleted, or approaching extinction, in 57 percent of the communities surveyed. (livescience.com)

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