These are the world’s longest-lived freshwater fish. Some reach 127 years old, a feat previously thought impossible for ...

If your aquarium feels a little blah, maybe it’s missing some bold personalities. We’re talking fins that flash like neon signs and colors that could outshine a fashion runway.

An extraordinary fossil bed in the arid grasslands of the Australian continent, called McGraths Flat, really is the ...

The giant freshwater stingray may be the world’s largest freshwater fish. It’s also cloaked in mystery. No one is sure how many giant stingrays are left, which habitats they prefer ...

It’s an extraordinary fact: 51% of all known species of fish live in freshwater - 18,075 species. And more are being discovered all the time. But few people have any idea of the unimaginable diversity ...

The Southeastern Michigan Aquarium Society held an auction Saturday, where hobbyists spent hours bidding on colorful fish to ...

Roach fish that migrate between different lakes and water courses have larger pupils and better eyesight than roach fish that stay in one place. The adaptation makes it easier for the red-eyed ...

Researchers unearthed the fossilized freshwater fish, named Ferruaspis brocksi, at the McGraths Flat site in central New South Wales, according to a study published March 17 in the Journal of ...

Fish can be found in freshwater, like ponds and streams ... the sea and onto cooler water as far away as Canada. That's an amazing journey! Eventually, they'll go back to their own river, swimming ...