The perch and walleye bite shut down fast. Rain, stubborn fish, and one lost jumbo followed—until an underrated fish ...

When oxygen disappears, most fish suffocate. This one ferments its own metabolism and waits months for spring beneath frozen ...

Road de-icing salts accumulate in streams, wetlands and lakes. They can stay in ecosystems for years or decades.

Stefan Lovgren writes on how freshwater fish from the Arctic to Africa are endanged by climate change and the unpredictable ...

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

This one-ton turtle once ruled South America’s rivers — until a changing planet proved too much for even the largest ...

The Bloomfield River cod, found in a far north Queensland river catchment, is the world's only tropical freshwater cod, and ...

Fish are usually confined to water as their primary habitat, but a small group defies that rule in surprising ways. These ...

In a landmark step for freshwater biodiversity conservation, Nepal has declared its first Fish Sanctuary in the Lower Karnali ...

A woman shared that when kept in proper conditions, this fish can flourish, and just because it can survive in worse ...

Invasive species often spread quietly, altering ecosystems long before the damage becomes visible. A combination of invasive fish, a freshwater mussel, and a predatory mammal has created subtle but ...

A woman shared a video of her Betta fish's incredible transformation after being moved from a small shop tank to a proper ...