A small fossil reveals that the largest freshwater fish, Otophysans, emerged in the sea, not in rivers, changing the ...

A tiny fossil fish from Alberta is forcing scientists to rethink a story that has sat quietly in textbooks for decades. It is ...

Nat Geo Explorer Zeb Hogan has spent decades asking the question. “I thought there would be a simple answer,” he now concedes, after recording a 661-pound stingray. “I was wrong.” Scientists tag and ...

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 ...

The world has seven continents, but do you know the largest freshwater fish in each? These creatures show the incredible diversity of Earth's inland waters. Let's get amazed as we look at these ...

Migratory freshwater fish are among the most threatened animals on the planet, a new report by a coalition of environmental organizations shows. The global assessment, described as the first of its ...

If you’re thinking of setting up an aquarium in your home, you may be wondering what kind of fish you’d like to have in your tank. Freshwater fish are a popular option since it can be easier for ...