America's freshwater rivers and lakes are losing their secret weapon: freshwater mussels. As an invaluable part of nature’s ...

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

You may be surprised that the largest, freshwater fish in North America may be swimming in the Mississippi River under the I-20/Hwy. 80 bridges at Vicksburg as you are reading this. The Alligator Gar ...

Betta fish are one of the most popular aquarium fish in the world. Here is what to know about bettas, including how long they ...

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

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 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 ...

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

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 ...