Fish

Find out everything there is to know about fish and stay updated on the latest news with the comprehensive articles, interactive features and fish pictures at LiveScience.com. Learn more about these fascinating creatures as scientists continue to make amazing discoveries about fish.

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For Sex-Changing Fish, Size Matters in Urchin Battle

December 12, 2014 | Article

A sex-changing California fish is growing bigger and gobbling up more sea urchins after a decade of protection, a new study finds.
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Whoosh: ‘Salmon Cannon’ Shoots Fish Upstream to Spawn

November 13, 2014 | Article

How long can a fish survive out of water? Long enough, it seems, for a 120-foot (37 meter) tube to vacuum up the fish and shoot it upriver, closer to the salmon's spawning grounds, research shows.
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Jellyfish Swarms: Bellwethers of Environmental Change

September 11, 2014 | Article

Human activities are promoting giant jellyfish swarms.
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Endangered Pupfish Could Vanish in 30 Years, Egg by Egg

September 09, 2014 | Article

The Devils Hole pupfish, an inch-long fish that sparked a Supreme Court battle, could go extinct in less than 30 years, a new modeling study concludes.
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Oversized Alien-Like 'Shrimp' Caught Off Florida Is ID'ed

September 05, 2014 | Article

Florida fisherman catches more than he bargained for with giant "alien" shrimp.
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Unusual Fish that Can Walk & Breathe Hold Clues to Animal Evolution | Video

August 27, 2014 | Video

African fish called bichir have lungs and can walk on land. In a new study, researchers raised juvenile bichir on land, and compared them with bichir raised in water.
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Lionfish's Terminator-Style Killing Alarms Scientists

August 14, 2014 | Article

When other predatory fish quit stalking their prey to look for easier targets, lionfish just keep on killing.
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Amazon's Biggest Fish Faces Threat of Extinction

August 13, 2014 | Article

Measuring 10 feet long and weighing in at more than 400 pounds, it's hard to imagine that the arapaima, the largest fish in the Amazon River basin, could ever go missing. But these huge fish are quickly disappearing from Brazilian waterways.
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Silver Surprise: Millions of Anchovies Swarm San Diego Surf

July 09, 2014 | Article

A Northern anchovy school was the largest group of anchovies ever seen offshore of La Jolla in the last 30 years.
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In Photos: Fish-Eating Spiders Around the World

June 18, 2014 | Image Album

Scientists have found spiders that hunt fish on every continent except Antarctica.
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