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

Many migratory species such as birds, bats, whales, and fish cross national borders to complete their lifecycle and need ...

The largest freshwater fish in North America, which was once abundant in California’s major rivers and San Francisco Bay, has declined in numbers to a point that state officials will consider whether ...

The most extensive global assessment of freshwater animals to date has revealed that a quarter of all freshwater animal species on the IUCN Red List are threatened with extinction. The study found ...

The Convention on the Conservation of Migratory Species of Wild Animals (CMS) does not adequately address the issue of migratory freshwater fishes.

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

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

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

Long ago, some saltwater fish adapted to freshwater — and in doing so, developed an extraordinary sense of hearing rivaling our own. By examining a 67-million-year-old fossil, researchers from UC ...