Fish

Cosma / Communication / Knowledge / Realm / Terrestrial / Life / Animal / Vertebrate / Fish
—————————

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 — Merriam-Webster See also OneLook

Thesaurus

Roget’s II (Thesaurus.com), Merriam-Webster Thesaurus, Visuwords

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

Fish (Encyclopædia Britannica)

Bony Vertebrates (One Zoom)

Agnatha (Catalogue of Life)
Chondrichthyes (Catalogue of Life)
Osteichthyes (Catalogue of Life)
Actinopterygii (Catalogue of Life)

Fish (WolframAlpha)

———————–

Adventures

Explore related posts on Cosma …

Animal Vision - What if you could see like an animal? Well, now you can! Here’s a link to a 360° video that shows what it’s like to see as a cat, dog, insect, rat and snake. How Animals See (BuzzFeed, YouTube) There are even some augmented reality apps out there that go a step further and let … Continue reading Animal Vision
Cuttle Vision - Cuttlefish are odd creatures, so news stories about them tend to be interesting. However, a story about them that’s going a bit viral is downright amusing! As you can see from the image in this video from the Guardian, some scientists wanted to find out whether or not cuttlefish have stereoscopic vision (like humans do), … Continue reading Cuttle Vision

———————–

Inspiration

Among a Thousand Fish: Diving with Caranx (Air Pano, YouTube 360° Video)

Tropical Fish Cam (Aquarium of the Pacific in Long Beach, California, Explore.org)

Talks about Fish (TED: Ideas Worth Spreading)
Articles about Fish (Big Think)

———————-

Innovation

Science

Ichthyology, also called fish science, is the branch of zoology devoted to the study of fish, including jawless fish (Agnatha), cartilaginous fish (Chondrichthyes) and bony fish (Osteichthyes). According to FishBase, 33,400 species of fish had been described as of October 2016, with approximately 250 new species described each year. — Wikipedia

Ichthyology (Encyclopædia Britannica)

FishBase (R. Froese & D. Pauly)
Eschmeyer’s Catalog of Fishes (California Academy of Sciences)

Discover Fishes (Florida Museum of Natural History)

————————–

Preservation

—————————

Participation

Education

Fish (Science Trek)
Here Fishy Fishy (Biology4Kids)

Fascinating Fish (OLogy, American Museum of Natural History)

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources

Community

Occupation

Zoologists and Wildlife Biologists (CareerOneStop, U.S. Department of Labor, Employment and Training Administration)

Organization

American Society of Ichthyologists and Herpetologists
Zoological Association of America
Association of Zoos and Aquariums

News

Ichthyology & Herpetology (American Society of Ichthyologists and Herpetologists)
Fish (EurekaAlert, American Association for the Advancement of Science)
Fish (bioRxiv: Preprint Server for Biology, Cold Spring Harbor Laboratory)
Fish (JSTOR)
Fish (Science Daily)
Fish (Science News)
Fish (Phys.org)
Fish (NPR Archives)

Government

Fish & Sharks (Northeast Fisheries Science Center, NOAA Fisheries)

More News …

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

New evidence suggests spinosaurus spent most of...
on October 25, 2026 at 11:52 am
Millions of years after animals first conquered land, some took an extraordinary evolutionary U-turn and returned to the water. Using machine learning and thousands of fossil measurements, Yale scientists have uncovered surprising clues about which prehistoric creatures truly became aquatic. Their findings suggest that Spinosaurus spent most of its life underwater, while some ancient marine reptiles previously thought to be fully aquatic actually spent considerable time on land.
A simple touch can bring dying corals back to...
on October 19, 2026 at 11:05 am
Scientists have discovered that severely bleached corals can make a remarkable comeback simply by touching healthy, genetically identical corals. In laboratory experiments, dying corals regained their color and fully recovered within seven weeks, with as little as five days of contact sometimes enough to start the healing process.
Archaeologists discover 1,200-year-old mummified...
on October 18, 2026 at 2:32 am
Archaeologists have discovered 1,200-year-old remains of Peru’s famous hairless dogs at an ancient Wari Empire burial site, including remarkably preserved mummies and puppies buried alongside humans. Their unusual teeth, diets, and burial arrangements reveal surprising clues about how ancient Peruvians cared for, bred, and sometimes discarded their dogs.
Gigantic prehistoric snake discovered in India...
on October 14, 2026 at 5:44 am
A massive prehistoric snake discovered in India may have rivaled the largest snake ever known. Called Vasuki indicus, the 47-million-year-old giant could have reached up to 50 feet long, making it comparable to the legendary Titanoboa. Scientists believe its enormous body made it a slow-moving ambush predator, similar to a modern anaconda.
Scientists uncover the 2.3-billion-year-old...
on October 12, 2026 at 9:27 pm
Scientists may have solved a 2.3-billion-year-old mystery about how Earth maintained enough oxygen to support life. Ancient rocks reveal that phosphorus recycling in the oceans created a self-sustaining cycle that helped keep oxygen levels high, even as the planet underwent dramatic environmental changes. The discovery challenges assumptions about Earth's early atmosphere and raises new questions about why complex life took so long to emerge.

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.

Lab-aged microplastics enable tests of...
on October 30, 2026 at 2:20 am
A newly published study advances our knowledge of how microplastics may age in the environment and whether they stick to other contaminants as they do so. Microplastics (MPs) are tiny plastic pieces that measure less than 5 millimeters (about 0.2 inches) in length. The study looked at the aging of MPs made of three common polymer chemicals—polyethylene, polyethylene terephthalate and polypropylene—to see if they changed as they aged and how that affected nearby contaminants.
Researchers observe the arrival of El Niño in...
on October 29, 2026 at 10:30 pm
For more than 30 years, MBARI technology has recorded real-time data about Monterey Bay, from oceanographic conditions at the surface to biological surveys in the depths of Monterey Canyon. These data are integral to understanding our changing ocean and underpin the institute's efforts to monitor the impacts of the incoming El Niño, which has been predicted to be among the strongest since the beginning of modern oceanography.
Microplastic shape can influence viral disease...
on October 29, 2026 at 8:20 pm
The shape of microplastics can influence how deadly a viral infection can be for fish, according to new research from William & Mary's Virginia Institute of Marine Science (VIMS). The findings suggest that some forms of plastic pollution pose greater biological risks than others, offering scientists a potential path toward reducing the environmental impacts of microplastics.
Key Atlantic currents could collapse this...
on October 29, 2026 at 6:20 pm
Icelandic government officials recently met to discuss a dramatic scenario: what if the current that circulates Atlantic waters weakened significantly, or collapsed altogether?
Famed oceanographer calls for ending krill catch...
on October 29, 2026 at 6:20 pm
Renowned oceanographer Sylvia Earle is calling for an end to krill fishing near Antarctica as officials from the U.S., China, Russia and 24 other governments negotiate a possible deal to dramatically expand fishing for the crustacean that's a vital food source for whales in the international waters surrounding the ice-covered continent.