Fish
436-million-year-old fossil found in South China is oldest complete bony fish ever discovered
The discovery of two ancient fish in South China has re-written what we thought we knew about the evolution of early vertebrates.
No that's not a golf ball on its head – one man-made very weird species...
Discover on of the world's weirdest fish that was entirely man made.
"Like an ‘aircraft’ hovering in the middle of the water." Ghostly cavefish found beneath the ground in China
The otherworldly Yang's plateau loach is one of hundreds freshwater fish species described in 2025, new report reveals.
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This “unique and crazy” prehistoric fish is the size of a door. Now thousands are being released into a remote Swedish river
The Atlantic sturgeon was driven to extinction in Europe by the middle of the 20th century. In Sweden’s Göta River, a pioneering rewilding initiative is helping this ancient fish to reclaim its ancestral home
Just like in Jaws, this great white shark got stuck in a small pond. Here’s what happened next...
When a great white shark got trapped in a shallow saltwater pond in Massachusets, Greg Skomal was called to help. Here’s how the experts tried to free her
"It doesn't come much weirder than having a see-through head!" 16 strangest, weirdest fish in the world, including one that can incredibly live out of water
Our seas are brimming with strange and wonderful creatures. Meet 13 of the weirdest fish in the world, which sport everything from super-long noses to golfball heads
Plants play techno, chimps drum and one creature uses its minuscule penis as a bow – why music isn’t just for humans
It’s not just the hills that are alive with the sound of music – ponds and oceans thrum with tunes, too
It lasted thousands of years and puzzled Aristotle and Freud – is this the biggest animal mystery of all time?
Scientists were left baffled over how eels reproduced – leading to the belief they spontaneously spawned
Do sharks really die if they stop swimming?
Why for some sharks stopping isn't an option...
“Literally caught between the devil and the deep blue sea.” Hunted from above and below, is this the world’s unluckiest fish?
Footage from the BBC TV series The Hunt demonstrates how the life of a flying fish can be a tough one
This prehistoric apex predator is older than trees, the Atlantic Ocean and even the North Star. A biologist explains why
Are sharks really older than trees? Yes – and a whole lot more, explains Will Newton
It has hundreds of teeth on its eyeballs? Yes - well sort of...
Did you know whale sharks hide a curious armour of tooth-like scales across their eyes?
These enormous invasive fish almost exterminated local fish stocks. Now they’ve started snatching pigeons
Measuring up to 2 metres long, this monstrous fish lurks in rivers throughout Europe
"Never seen before.” Scientists make astounding discovery on Australian island
Researchers in Australia found an endangered species of lamprey far outside its usual range and hope this could help them better understand how to protect it.
6 surprising incestuous animals – and why these species prefer to keep it in the family
From wolves to cichlid fish, inbreeding has been observed in a surprising amount of species
How and why do seahorses change colour?
Marine biologist and photographer Matt Doggett answers your wild question.
Do sharks develop a taste for human flesh after a first bite?
Humans aren’t natural prey for sharks and it’s incredibly unlikely that sharks get a taste for humans after a bite
It's 6 metres long, ugly with translucent skin and looks like a goblin with a witch’s nose and has the strangest jaw ever seen. Oh and it lives deep in the ocean too
This jaw-dropping shark is pink, nightmarishly ugly and can slingshot its jaw out of its face when it’s hungry
1,000 giant fish are mysteriously circling in this South African estuary. Scientists may finally know why
Researchers believe they may have worked out why giant trevally swim upstream in the Mtentu Estuary and circle in vast numbers.
Do goldfish really only have a 3 second memory?
Goldfish are far more intelligent than their reputation suggests...
There's a weird fish in Washington with a huge hole in its head. Scientists think they've figured out why
Researchers studying rockhead poachers from Deadman Bay think they may have solved the mystery of the fish's odd bowl-shaped head.
"We owe our existence to an unlikely moment 350- million years ago when a prehistoric fish hauled itself out of the water. But why did this just happen once?"
Study suggests adapting to life on land wasn't the biggest challenge facing fish coming ashore millions of years ago.
It's 7 metres long, can weigh almost a tonne and can live for 400 years or more – meaning some around today were born in 1625...
The mystery of the lifespan of Greenland sharks has finally been unveiled thanks to new research.
What's the rarest fish on the planet? And can they be saved?
Despite just around 38 left scientists are hopeful these beautiful vibrant blue fish can be saved from extinction
