(PhysOrg.com) -- "Psychedelica" seems the perfect name for a species of fish that is a wild swirl of tan and peach zebra stripes and behaves in ways contrary to its brethren. So says University of Washington's Ted Pietsch, ...
Feb 24, 2009
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Gills are best known for helping most fish species breathe underwater. But less well known is the fact gills regulate the salt and pH balance of fishes' blood, a vital role played by the kidneys in other animals. Collectively ...
Evolution
Oct 19, 2022
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29
Five-hundred million years ago, it was relatively safe to go back in the water. That's because creatures of the deep had not yet evolved jaws. In a new pair of studies in eLife and Development, scientists reveal clues about ...
Evolution
Jun 28, 2022
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The emergence of jaws in primitive fish allowed vertebrates to become top predators. What is less appreciated is another evolutionary innovation that may have been just as important for the success of early vertebrates: the ...
Evolution
Sep 29, 2020
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172
Oriol Sunyer, a professor at the University of Pennsylvania School of Veterinary Medicine, has described fish as "an open gut swimming." Their mucosal surfaces—their skin, digestive tract and gills—are in constant contact ...
Plants & Animals
Feb 18, 2016
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(PhysOrg.com) -- A long-standing theory is that the first function of fish gills was to allow fish to breathe, but new research is casting doubt on the idea that this activity developed first.
A fancy-looking French angelfish that was found one day with a funny float has its buoyancy back after taking some time from its tropical trappings to get a CT scan at the Denver Zoo.
Plants & Animals
Sep 5, 2023
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18
The lakes in Wyoming's Wind River Mountains historically didn't contain fish, but stocking of trout that began in the early 1900s has created an environment in which hundreds of those lakes now have strong fish populations—some ...
Evolution
Jul 31, 2023
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84
Climate change-induced droughts and fish kills affect larger fish more severely than they affect smaller individuals, according to new research.
Plants & Animals
Jul 18, 2023
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28
The simple answer to the question of whether fish can catch a cold is: no. This is because fish don't have lungs or a respiratory tract—or a nose to breathe through, for that matter. This is why you'll never see a fish ...
Plants & Animals
May 5, 2023
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