A tiny fossil fish from Alberta is forcing scientists to rethink a story that has sat quietly in textbooks for decades. It is a story about how freshwater fish rose to dominance, and how a few bones ...

A new fossil fish suggests that the largest group of freshwater fish began in the sea, not in rivers. These fish include more than 10,000 species, from river giants to tiny aquarium favorites. The key ...

Mosasaurs, giant marine reptiles that existed more than 66 million years ago, lived not only in the sea but also in rivers. This is shown by new research based on analyses of a mosasaur tooth found in ...

An Australian freshwater Murray cod has surprised scientists by swimming a marathon 530 miles along a major river system, believed to be a record for the species. The fish, named Arnie after Australia ...

Fish don’t have ears that stick out of their heads like we do. But many of them hear just fine – especially freshwater fish like catfish, minnows, and tetras. What’s even more surprising is that they ...

Africa’s freshwater fish are disappearing at alarming rates, with a new report from the World Wide Fund for Nature warning that over a quarter of species face extinction. On Lake Victoria, the ...

An artist's reconstruction of the Weberian apparatus in a 67 million-year-old fossil fish. The Weberian structure (gold-colored bones at center) arose from a rib (shown in gray attached to several ...

As the world’s oceans undergo a dramatic rise in temperature, jellyfish blooms have become a regular occurrence, threatening both beachgoing tourists and coastal infrastructure around the world. But ...

From tailraces below dams to vast reservoirs, here’s how to find, target, and land trophy striped bass across the Southeast. Being from New England I had never experienced freshwater striped bass ...

Many Hoosiers were surprised last month to learn that armadillos can be spotted roaming around southern Indiana. The Indiana Department of Natural Resources once again shared the existence of an ...