Bass in southeastern rivers turn out to be two species, highlighting hidden diversity and growing threats from habitat ...

In the wide, sandy stretches of Brazil’s Araguaia River, the piraíba, South America’s largest catfish, is a cornerstone of ...

A new species of Amazonian fish, Pyrrhulina punctata, has been discovered in Peru, revealing previously unknown biodiversity ...

A sweeping global report finds that migratory freshwater fish are in steep decline, with populations down roughly 81% since ...

Thousands of fish species are facing "catastrophic" decline — threatening the health, food security and livelihoods of hundreds of millions of people around the world. New research shows that ...

University of Missouri researchers have shown how an all-female fish species called the Amazon molly defies the long-held ...