Arapaima are the largest freshwater fish in South America—and a keystone species in the Amazon River ecosystem.

There are many fresh water fish diseases that can strike even the most well-maintained tanks, so being able to identify and ...

Certain fish and the Bermuda Triangle are linked in an underwater enigma that defied explanation for years, but recent ...

Also known as white spot disease, ich can be very dangerous for fish.Reviewed by Nick Saint-ErneReviewed by Nick ...

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 ...

Want to get in on a salty topwater bite? Here's how to catch saltwater fish — from tuna to redfish — on topwater lures.

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 ...

This story appears in the April 2017 issue of National Geographic magazine. Hundreds of millions of people worldwide would lack their prime source of protein without freshwater fish. Yet the lakes ...

Researchers have detailed an outbreak that sickened 67 people in Italy in 2022 caused by a parasite after people ate fish in ...

Research expeditions conducted by Fauna & Flora and our partners in Kyrgyzstan have revealed a previously common freshwater ...

A report has warned of a "catastrophic" decline in freshwater fish, with nearly a third threatened by extinction. Conservation groups said 80 species were known to have gone extinct, 16 in the ...

Threats like habitat loss and fragmentation, pollution, and unsustainable water use are pushing rivers, lakes, and wetlands ...