There is a new king of the Columbia. Each spring, a chrome tide of fish native to the East Coast floods the Northwest's mightiest river by the millions. Shad, not salmon, are thriving in the warm, still water created by hydroelectric ...
Plants & Animals
Jul 24, 2024
1
162
The identification of a key gene in monotremes has increased our understanding of why the stomachs of platypuses and echidnas are atypically small, non-acidic, and, in the instance of platypuses, lack a pyloric sphincter.
Plants & Animals
Jul 23, 2024
0
104
Researchers at the Federal University of São Paulo (UNIFESP) and the University of São Paulo (USP) have determined, for the first time with precision, the vertical limits of the marine environments in the Southwest Atlantic, ...
Ecology
Jul 25, 2024
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1
Schools of fish are able to pull off complex, coordinated maneuvers without ever colliding with one another. They move in unison but don't follow a leader.
Molecular & Computational biology
Jul 24, 2024
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1
Tetrapods
A fish is any aquatic vertebrate animal that is typically ectothermic (or cold-blooded), covered with scales, and equipped with two sets of paired fins and several unpaired fins. Fish are abundant in the sea and in fresh water, with species being known from mountain streams (e.g., char and gudgeon) as well as in the deepest depths of the ocean (e.g., gulpers and anglerfish).
Food prepared from fish is also called fish, and it is an important food source for humans. They are harvested either from wild fisheries (see fishing) or farmed in much the same way as cattle or chickens (see aquaculture). They are also exploited by recreational fishers and fishkeepers, and are exhibited in public aquaria. Fish have had a role in many cultures through the ages, ranging from deities and religious symbols to the subjects of books and popular movies.
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