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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This Fish Just Gave Evolution the Finger and Got Pregnant

February 21, 2019 | Article

Mary's species of fish never evolved to have sex or incubate live young. She did it anyway.
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Did Great White Sharks Wipe Out the Giant Megalodon?

February 13, 2019 | Article

Teaser: A re-examination of the fossil record has produced a new theory of the super-fish's demise.
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A Drunk Man Swallowed a Live, Venomous, Spiny Catfish. Here's What Happened.

January 25, 2019 | Article

As part of a drinking game, a 28-year-old man from the Netherlands attempted to swallow a living fish with some powerful natural defenses.
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100-Million-Year-Old Hagfish Complete with Slime Kit Discovered

January 21, 2019 | Article

Lingering traces of preserved hagfish goo hint at the lineage of this slimy creature.
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Lionfish: Beautiful and Dangerous Invaders

January 17, 2019 | Reference

Lionfish are known for their breathtaking beauty, venomous sting and relentless invasion of tropical waters far from their native habitat.
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These Baby Sharks Swim from One Uterus to Another to Eat Their Unfertilized Siblings

December 20, 2018 | Article

The little sharks swim around inside their mom, switching between her multiple uteruses. When they get hungry they eat her unfertilized eggs.
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How Do Animals Breathe Underwater?

December 07, 2018 | Article

Fish do it. So do jellyfish, starfish and sea cucumbers.
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Dinosaur-Era Super-Piranha Terrorized Jurassic Seas

October 18, 2018 | Article

The little sea monster used its mouth full of scissor teeth to rip flesh from other fish.
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This Bizarre, Blind Swamp Eel Breathes Through Its Blood-Red Skin

September 26, 2018 | Article

A new species of swamp eel that tunnels through dirt will haunt your nightmares.
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Wriggling, Googly-Eyed Mass Astonishes Deep-Sea Researchers

September 24, 2018 | Article

In a strange, underwater video, a black mass drifts toward the camera. It's made up of a dark, spherical blob up front and a long, thin tail in the back. And it wriggles.
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