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

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 ...

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 ...

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 ...