Fish

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Caranx (Fishbase)
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FishBase (R. Froese & D. Pauly)
Fish Portal (Wikipeda)

Dictionary

fish : any of numerous cold-blooded strictly aquatic craniate vertebrates that include the bony fishes and usually the cartilaginous and jawless fishes and that have typically an elongated somewhat spindle-shaped body terminating in a broad caudal (see caudal 2) fin, limbs in the form of fins when present at all, and a 2-chambered heart by which blood is sent through thoracic gills to be oxygenated — Webster

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Encyclopedia

Fish are the gill-bearing aquatic craniate animals that lack limbs with digits. They form a sister group to the tunicates, together forming the olfactores. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Tetrapods emerged within lobe-finned fishes, so cladistically they are fish as well. However, traditionally fish are rendered paraphyletic by excluding the tetrapods (i.e., the amphibians, reptiles, birds and mammals which all descended from within the same ancestry). Because in this manner the term “fish” is defined negatively as a paraphyletic group, it is not considered a formal taxonomic grouping in systematic biology. The traditional term pisces (also ichthyes) is considered a typological, but not a phylogenetic classification. — Wikipedia

Encyclopædia Britannica

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Fish FAQs (Northeast Fisheries Science Center, NOAA Fisheries)

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Ichthyology, also known as fish science, is the branch of zoology devoted to the study of fish. This includes bony fish (Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha). While a large number of species have been discovered, approximately 250 new species are officially described by science each year. According to FishBase, 33,400 species of fish had been described by October 2016. — Wikipedia

Encyclopædia Britannica

Flathead catfish (Fishbase)
Flathead catfish (Wikipedia)

What This Walking Fish Can Teach Us About Evolution (National Geographic)

Preservation

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National Aquarium (Baltimore)

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Seafood Watch (Monterey Bay Aquarium)

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Fish News -- ScienceDaily All about fish. Current research in marine biology including fish habitats, aquaculture, speciation, deep sea fish and more.

  • New York waters may be an important, additional...
    on September 23, 2021 at 3:56 pm

    A new study finds that that some large whale species (humpback, fin and minke whales) use the waters off New York and New Jersey as a supplemental feeding area feasting on two different types of prey species.

  • Non-native fish are main consumers of salmon in...
    on September 23, 2021 at 2:20 pm

    When warmwater fish species like bass, walleye and crappie that are not native to the Pacific Northwest, but prized by some anglers, overlap with baby spring chinook salmon in reservoirs in Oregon's Willamette River they consume more baby salmon than native fish per individual, new research found.

  • Loss of picky-eating fish threatens coral reef...
    on September 20, 2021 at 7:20 pm

    The networks of predator fish and their prey found on coral reefs all over the world are remarkably similar, and those predator fish are pickier eaters than previously thought. These delicate ecosystems become even more vulnerable when these specialized hunters go extinct.

  • Coral reef biodiversity predicted to shuffle...
    on September 20, 2021 at 7:19 pm

    Most coral reef biodiversity consists of tiny organisms living deep within the three-dimensional reef matrix. New research reveals that the species which dominate experimental coral reef communities shift due to climate change, but the total biodiversity does not decline under future ocean conditions of warming and acidification predicted by the end of the century.

  • Coral reefs are 50% less able to provide food,...
    on September 17, 2021 at 3:08 pm

    The capacity of coral reefs to provide ecosystem services such as food and jobs, relied on by millions of people worldwide, has declined by half since the 1950s, according to a new study. Other findings are equally bleak: the authors found that global coverage of living corals had declined by about half since the 1950s and consequently, the diversity of species had also declined, by more than 60 per cent. Finding targets for recovery and climate adaptation would require a global effort, while […]


Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Coral reef cover, biodiversity, fish catches have...
    on September 17, 2021 at 3:00 pm

    Coral reefs around the world are under threat because of climate change, overfishing, pollution, and more. Now, researchers reporting in the journal One Earth on September 17 offer the first comprehensive global look at what these impacts on coral reefs mean for ecosystem services, the ability of the reef to provide essential benefits and services to humans. Overall, the findings show that the significant loss in coral reef coverage has led to an equally significant loss in the ability of the […]

  • Tasmania's salmon industry detonates underwater...
    on September 17, 2021 at 1:41 pm

    Australians consume a lot of salmon—much of it farmed in Tasmania. But as Richard Flanagan's new book Toxic shows, concern about the industry's environmental damage is growing.

  • Animals died in 'toxic soup' during Earth's worst...
    on September 17, 2021 at 12:39 pm

    The end-Permian mass extinction event of roughly 252 million years ago—the worst such event in earth's history—has been linked to vast volcanic emissions of greenhouse gases, a major temperature increase, and the loss of almost every species in the oceans and on land.

  • Ground-breaking bacteria-killing viruses unite...
    on September 17, 2021 at 6:39 am

    Mycobacterium abscessus, a relative of the bacteria that cause tuberculosis and leprosy, is responsible for particularly severe damage to human lungs and can be resistant to many standard antibiotics, making infections extremely challenging to treat. However, there is hope. Bacteria are vulnerable to naturally occurring viruses, called bacteriophages; for every species of bacteria, there is a unique bacteriophage that will destroy it. Scientists are testing new therapies that combine […]

  • Researchers in Germany discover a new species of...
    on September 16, 2021 at 11:00 pm

    Researchers from the Universities of Tübingen and Zaragoza have discovered a previously unknown species of otter from 11.4-million-year-old strata at the Hammerschmiede fossil site.