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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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Ophichthidae is a family of sinuous fishes that are also known as snake eels. The species pictured here, Aprognathodon platyventris, is found in the western Atlantic Ocean.

Snake eels stage stomach-bursting escape after being eaten (and then things get really nasty)

By Mindy Weisberger

After snake eels are swallowed by bigger fish, they can burst out of their predators' stomachs ... to freedom? Not exactly.

A painting of the 45-million-year-old saber-toothed anchovy Monosmilus chureloides chasing a shoal of smaller anchovies … until the early whale Dalanistes snaps it up.

Ancient 'shapeshifting vampire demon' anchovy had saber tooth and fangs

By Laura Geggel

An anchovy cousin had fang-like teeth on the bottom jaw and one giant saber tooth on the top.

A manta ray in the Maldives.

Rare pink manta ray caught courting lady friend Down Under

By Laura Geggel

Photos of a bright pink manta ray have gone viral after the Pepto-Bismol-colored creature was spotted swimming near Australia’s Great Barrier Reef.

Lamprologus lethops, a fish that lives in the lower Congo River, is pale and blind like fish that dwell in caves deep underwater.

Dying Fish Revealed Congo Is World's Deepest River

By Mindy Weisberger

The turbulent lower Congo River, home to hundreds of fish species, is not only Earth's deepest river; it also presents biologists with an intriguing window into evolution.

A colorful blue and red betta fish against a black background.

Betta Fish: The Dazzling Siamese Fighting Fish

By Jeremy Rehm

Reference Article: Facts about betta fish.

A school of scalloped hammerhead sharks (Sphyrna lewini) swims in the Galapagos.

What If There Were No Sharks?

By Mindy Weisberger

Scary portrayals of great whites in pop culture might lead some people to wonder if the world would be better off with no sharks at all.

50-Million-Year-Old Fossil Shows School of Baby Fish in Their Final Moments

By Brandon Specktor

Baby fish swam in schools 50 million years ago, according to this remarkable fossil held in a Japanese museum.

Coral Reefs Have 'Halos,' and They Can Be Seen from the Heavens

By Mindy Weisberger

What's the story behind reefs' mysterious "halos" of empty sand?

Photos: Cretaceous 'Graveyard' Holds a Snapshot of the Dino-Killing Asteroid Impact

By Mindy Weisberger

A fossil site in North Dakota preserves a unique snapshot of the minutes after an asteroid struck Earth around 66 million years ago.

Fossil 'Death Pit' Preserves Dino Extinction Event … But Where Are the Dinosaurs?

By Mindy Weisberger

What happened after the Cretaceous-ending asteroid struck Earth? A new fossil site may have answers.

Mola Mola

Giant, Weird-Looking Fish With 'Startled' Eyes Washes Up on Aussie Beach

By Laura Geggel

Hoodwinker Sunfish

Sunfish Bigger Than a Hot Tub Got Lost and Washed Up in the Wrong Hemisphere

By Laura Geggel

A fish so mysterious that scientists named it the "hoodwinker" because it had eluded them for decades has washed ashore in California, thousands of miles from its home in the Southern Hemisphere.

Underwater Photography of the Year 2019

Photos of Colorful, Majestic Marine Creatures Are 'A Visual Feast'

By Christine Lunsford

Photographers from around the world competed to take home the top prizes in the 2019 Underwater Photographer of the Year contest.

One of Mary's offspring is pictured as an adult.

This Fish Just Gave Evolution the Finger and Got Pregnant

By Rafi Letzter

Mary's species of fish never evolved to have sex or incubate live young. She did it anyway.

megalodon

Did Great White Sharks Wipe Out the Giant Megalodon?

By Rafi Letzter

Teaser: A re-examination of the fossil record has produced a new theory of the super-fish's demise.

The bronze catfish skeleton, minus its tail, can now be found in the Natural History Museum Rotterdam alongside its amputated pectoral fin.

A Drunk Man Swallowed a Live, Venomous, Spiny Catfish. Here's What Happened.

By Rafi Letzter

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.

100-Million-Year-Old Hagfish Complete with Slime Kit Discovered

By Mindy Weisberger

Lingering traces of preserved hagfish goo hint at the lineage of this slimy creature.

Lionfish, which have no natural predators in the Atlantic, threaten reef systems by preying on fish that clean the reef and keep it healthy.

Lionfish: Beautiful and Dangerous Invaders

By Nicoletta Lanese

Lionfish are known for their breathtaking beauty, venomous sting and relentless invasion of tropical waters far from their native habitat.

A series of ultrasound images shows a shark embryo swimming from one uterus to another.

These Baby Sharks Swim from One Uterus to Another to Eat Their Unfertilized Siblings

By Rafi Letzter

The little sharks swim around inside their mom, switching between her multiple uteruses. When they get hungry they eat her unfertilized eggs.

How Do Animals Breathe Underwater?

By Mindy Weisberger

Fish do it. So do jellyfish, starfish and sea cucumbers.