Animals, features and articles | Educational Science

Nov 9, 2022

The Devils Hole pupfish is so inbred that it shouldn’t be alive

The Devils Hole pupfish is small, blue and incredibly endangered. It also may be the most inbred creature on Earth. All 263 wild Devils Hole pupfish (Cyprinodon diabolis) live in one location: a 10-foot by 20-foot (3 by 6 meters) cavern in the middle of Devils Hole in Nevada, a...

Nov 14, 2022

Where do eels come from?

Critically endangered European eels (Anguilla anguilla) spend their adult lives in fresh water in Europe, ranging from Norway to the Mediterranean. But you won't find any baby eels in the mix. So where do all the mature eels come from? Almost entirely across the Atlantic Ocean, as it turns out....

Nov 14, 2022

Fish moms that carry young in their mouths sometimes eat their babies for breakfast

Few sights in nature are more heartwarming than that of a mother caring for her young — unless that nurturing act ends with an episode of cannibalism. Female cichlids — fish in the family Cichlidae — are mouthbrooding fish, carrying their young in their mouths first as eggs and then...

Nov 24, 2022

Giant 67-pound goldfish reeled in from French lake may be one of the largest ever caught

A British angler has caught one of the world's largest goldfish on record after an epic battle with the fish in a French lake. The fisher landed the 67-pound (30 kilograms) fish, nicknamed The Carrot, after a 25-minute tug-of-war at Bluewater Lakes in France's northeast Champagne province. A hybrid between...

Jan 5, 2023

Invasive rats are changing how reef fish behave. It's because there's not enough bird poop.

It's no secret that invasive rats can cause widespread and long-lasting damage to tropical island ecosystems, but now, a new finding reveals that the invasive rodents' impacts may extend even further than the land on which they scamper; these ravenous critters can also disrupt the surrounding marine ecosystem. In the...

Jan 31, 2023

Unicorn-like blind fish discovered in dark waters deep in Chinese cave

Lurking within the dark waters of Chinese caves is a bizarre fish species that has an uncanny resemblance with mythical equine creature. The newfound fish weirdos, which researchers discovered hiding in a pitch-black pool the size of a kitchen table, have no scales or color, tiny rudimentary eyes that likely...

Mar 3, 2023

Upside-down anglerfish and other alien oddities spotted in one of the world's deepest trenches

One of the deepest ocean trenches on Earth, the Kermadec Trench in the South Pacific, is home to rarely seen sea creatures living in the hadal zone, at depths between 20,000 and 36,000 feet (6,000 to 11,000 meters). Now, a new underwater expedition has released stunning photos of these oddities....

Mar 8, 2023

Ancient monster fish 'Dunk' was short and chunky, study finds

A 360 million-year-old sea monster that was once thought to be as big as a bus was actually less than half that long, but just as chunky, a new study finds. The bony fish Dunkleosteus terrelli, nicknamed Dunk, was one of many superpredators that prowled the oceans during the Devonian...

Mar 28, 2023

Why did a weird goblin shark going viral on Twitter blow up into a bizarre scientific spat?

In August 2020, a strange, long-nosed creature washed up on a beach in Greece and caught the attention of a passerby. Giannis Papadakis photographed the specimen and sent it to a team of scientists, who identified it as a remarkably preserved juvenile goblin shark (Mitsukurina owstoni). This was an extraordinary...

Apr 5, 2023

Deepest-dwelling fish ever seen is a ghostly snailfish spotted more than 27,000 feet beneath the ocean surface

A ghostly white snailfish has unknowingly smashed the record for the deepest fish ever seen after it was filmed at more than 27,000 feet beneath the ocean surface. Scientists on board the research vessel DSSV Pressure Drop stumbled across the snailfish, which is likely a juvenile, in September 2022 while...

May 5, 2023

Elusive cannibal fish from the twilight zone are washing up on Oregon beaches and no one knows why

Bizarre, rarely seen cannibalistic fish with giant eyes and dagger-like fangs have been washing up along the Oregon coast, leaving experts stumped. In a Facebook post on May 1, Oregon State Parks wrote that several lancetfish had been found on beaches from Nehalem south to Bandon in recent weeks. No...

May 11, 2023

Piranhas swarm 8 tourists at Brazilian resort, leaving them with bloody legs and feet

A school of piranhas attacked holiday makers playing in a stream in a Brazilian resort on May 1, leaving at least eight people injured. The fish tore at the bathers' legs and feet with their razor-sharp teeth, driving them out of the water and onto a tourist beach in Tarumã-Açu,...

May 25, 2023

Why are cave-dwelling eels growing skin over their left eyes? It may be evolution in action.

Moray eels that lurk in gloomy, underwater caves appear to be adjusting to the darkness by growing skin over their eyes. The newly described bean-eyed snake moray (Uropterygius cyamommatus) is the first moray eel species known to inhabit anchialine caves — caves carved into volcanic or limestone rock that are...

Jun 15, 2023

Gigantic, 9.4-foot-long catfish is the largest ever caught

Whiskered, marble-skinned giants lurk in the murky waters of Italy's longest river. These behemoths are prized targets for anglers, but a fisher recently hooked a truly colossal individual — and it may be the biggest ever found. Alessandro Biancardi, an Italian angler, pulled an enormous, 9.4-foot-long (2.85 meters) catfish from...

Jun 19, 2023

Do fish get thirsty?

Fish are constantly surrounded by water, but do they get thirsty? And how would they even drink? To answer these question, it's crucial to understand how water — a solvent — interacts with other substances like salt, which is a solute, across a cell membrane. Through a process called osmosis,...