News tagged with fish
Evolution at warp speed: Hatcheries change salmon genetics after a single generation
The impact of hatcheries on salmon is so profound that in just one generation traits are selected that allow fish to survive and prosper in the hatchery environment, at the cost of their ability to thrive ...
Dec 19, 2011 |
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Evidence of ancient lake in California's Eel River emerges
A catastrophic landslide 22,500 years ago dammed the upper reaches of northern California's Eel River, forming a 30-mile-long lake, which has since disappeared, and leaving a living legacy found today in the ...
Space & Earth / Earth Sciences
Nov 14, 2011 |
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Killer fungus spreads to endangered gray bats: US
A deadly fungus that has wiped out large populations of bats in North America has spread to a new species, the endangered gray bat, US wildlife officials said Tuesday.
May 29, 2012 |
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Microscope looks into cells of living fish
Microscopes provide valuable insights in the structure and dynamics of cells, in particular when the latter remain in their natural environment. However, this is very difficult especially for higher organisms. ...
May 16, 2012 |
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Better housing conditions for zebrafish could improve research results
Changing the conditions that zebrafish are kept in could have an impact on their behaviour in animal studies and the reliability of results, according to scientists from Queen Mary, University of London.
May 03, 2012 |
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Escape response of small fish tested using a supercomputer
(Phys.org) -- Small fish bend themselves into a 'C' shape before they flee from predators. Observations have suggested that this shape helps them to abruptly put the greatest distance possible between themselves ...
May 02, 2012 |
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Reef shark populations in steep decline: study
Many shark populations have plummeted in the past three decades as a result of excessive harvesting – for their fins, as an incidental catch of fisheries targeting other species, and in recreational fisheries. ...
Apr 27, 2012 |
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Fish larvae find the reef by orienting: The earlier the better
For the first time, a numerical study conducted by the University of Miami incorporates horizontal larval fish navigation skills into realistic 3D flow fields, creating a powerful tool that spells out how ...
Apr 23, 2012 |
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Athletic frogs have faster-changing genomes
Physically fit frogs have faster-changing genomes, says a new study of poison frogs from Central and South America.
Apr 12, 2012 |
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Changing climate can affect fish fertility
(Phys.org) -- Warmer water temperatures can greatly increase the reproductive capacity of the widely distributed pest fish species gambusia, or mosquito fish, a new study has found.
Apr 10, 2012 |
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How to make high-end perfumes without whale barf
University of British Columbia researchers have identified a gene in balsam fir trees that could facilitate cheaper and more sustainable production of plant-based fixatives and scents used in the fragrance industry and reduce ...
Apr 05, 2012 |
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Evolution in action: Genetic study may answer why we have plenty of fish in the sea
(PhysOrg.com) -- Three-spine sticklebacks aren't as pretty as many aquarium fish, and anglers don't fantasize about hooking one. But biologists treasure these small fish for what they are revealing about the ...
Apr 04, 2012 |
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Task force recommends reducing global harvest of 'forage fish'
A task force that conducted one of the most comprehensive analyses of global "forage fish" populations issued its report this week, which strongly recommends implementing more conservative catch limits for these crucial prey ...
Apr 03, 2012 |
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Autonomous sea gliders record sounds of fish emptying buoyancy bladders
(PhysOrg.com) -- Researchers attempting to map the various types of fish living in the eastern Gulf of Mexico have been using an automated sea glider, which is a small autonomous submarine outfitted with a ...
Mar 28, 2012 |
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Antibiotic resistant bacteria proliferate in agricultural soils
Infectious diseases kill roughly 13 million people worldwide, annually, a toll that continues to rise, aided and abetted by resistance genes. Now a study, published in the March Antimicrobial Agents and Chemotherapy finds ...
Mar 20, 2012 |
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Fish
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.
For more information about Fish, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
