Fish

A Piranha Was Just Found in an Arkansas Lake

The sharp-toothed fish was likely a pet gone rogue

Fish Can Adjust Gender Balance in Face of Rising Temperatures

Warmer waters mean fewer female reef fish. But, over generations, populations can restore the balance.

Colorado Lake Teems with Feral Goldfish

Parks and Wildlife thinks a goldfish owner dumped his pets into a local lake. Now a few years later, the fish swarm the water in thousands

This "Stars and Stripes" toadfish living in Okinawa Churaumi Aquarium in Japan is one member of a very noisy kind of fish

At Night, Fish Communicate With Special Calls, Whistles and Grunts

Dropping a hydrophone into an underwater cave helps researchers make sense of the din

Workers with the Nigiri Project head out to test pens in the flooded rice fields near Sacramento.

Rice Can Help Save Salmon If Farms Are Allowed to Flood

The Nigiri Project aims to restore the beloved fish by cutting a notch in a California levee and letting some floodplains return to nature

On March 3, 1939, Harvard freshman Lothrop Withington, Jr., swallows a, live, squirming goldfish to win a ten dollar bet. He reportedly practiced the feat for days before by swallowing baby goldfish and tadpoles.

The Great Goldfish Swallowing Craze of 1939 Never Really Ended

A Harvard undergrad’s $10 bet set off a sensation among college students that still echoes on the Internet today

Finally, the First Fish Ever Is Taken Off the Endangered Species List

The recovery of a tiny fish signals good news for area waterways and proof that, when heeded, protective measures can make a difference

The common ancestor of this Gentoo penguin likely evolved to be incapable of tasting most flavors—but why?

The Cold May Have Cost Penguins Most of Their Taste Buds

Recent genetic analysis shows that penguins can’t taste sweet or bitter, and scientists think sub-zero temps may be to blame

The face of Antarctica’s Ross Ice Shelf

Fish Live Under Antarctica’s Ice Shelf, Where It Seems They Shouldn’t Survive

Biologists expected the seafloor under a glacier to be nearly barren, until life swam into view

Fish Sperm Might Be the Secret to Recycling Rare Earth Elements

Japanese scientists have uncovered an unlikely source to aid in the extraction and recycling of rare earth metals

Fossils Show How Flying Fish Started to Glide

In the quest to avoid being eaten, some fish took a leap into the open air

Tuna are a hot commodity in Japan at this time of year — so hot that a sushi chef paid $37,500 for a single fish. Here, dogtooth tuna swim in the Indian Ocean.

The Same Guy Keeps Spending Insane Amounts of Money to Buy Japan’s First Tuna of the Season

This year, he bought it for $37,500—which he considered cheap

Like Underwater Jedi, Electric Eels Can Remotely Control Other Fish

Electric eels can shock prey into both revealing their positions and freezing in place

Pacific bluefin tuna populations have declined by up to 33 percent over the last 20 years.

300+ Species Just Joined the List of Threatened Plants And Animals

Overfishing, overhunting and habitat loss drove many of the new additions

We're Terrible at Distinguishing Real And Fake Schools of Fish

You can test your fish school savviness in a free online game created by scientists

An artist's impression of an antiarch mating scene.

A Very Ancient Group of Jawed Fish Were Having Surprisingly Intimate Intercourse

Many fish later ditched this clumsy method in favor of external fertilization

Coho salmon, here in full vivid spawning colors, are one of many species of wild Pacific salmon in danger of extinction.

What Can Humans Do to Save the Pacific Northwest's Iconic Salmon?

The fish is facing an upstream struggle to survive. Can human ingenuity find a solution?

A dead Chinese sturgeon found in the Yangtze in 2007

Chinese Sturgeon Is on the Brink of Extinction After 140 Million Years

Last year, the sturgeon didn’t reproduce at all in the wild

Fish Eat Mammals on the Regular

A new study indicates that in some ecosystems, mammals are a fairly normal foodstuff for fish

Corals And Fish Can Tell a Bad Reef When They Smell It

New research indicates that young marine species can be picky about where they choose to settle

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