Bull sharks are known to be able to swim between saltwater and freshwater, but they're showing up in rivers and lakes in ...

The biggest source of salty freshwater in D.C. and other major northern inland cities is an overapplication of road salt to thaw winter ice, which runs off into rivers or the ground.

Many of the country’s native fish species are threatened by habitat loss and pollution while the spread of invasive aliens is ...

Dibrugarh: A team of scientists has discovered a new species of cyprinid fish in the Brahmaputra river at Maijan in Dibrugarh ...

The last time I wrote about otters I stated that sea otters are in my top 10 list of “most appealing adult mammals.” First, ...

So upriver, in our inland freshwater rivers and streams, that's another place where we can attack microplastics and plastic pollution in general. [dramatic music] - [Barbara] ...

A river otter is one of the coolest mammals to find in the wild and a delight to watch. Of course, potential prey swimming around in the same waters would not consider the river otters cool or ...

Rivers, streams, lakes, and reservoirs aren't just scenic parts of our landscape -- they're also vital engines for life on Earth. These inland waters 'breathe' oxygen, just like we do. But a new ...

Best Tactics for Catching Pre-Spawn River Walleyes. The jig and minnow is the standard fare of spring walleye fishermen. Use a jig heavy enough to reach bottom and maintain contact in heavy current.

Salinization of freshwater and soils adversely affects 500 million people around the world, especially in low-lying river deltas. A new study led by researchers at the University of Portsmouth, in ...

Credit: Reddit. Few freshwater fish can match the size of the Mekong giant catfish, which can exceed 10 feet and weigh over 660 pounds. Native to the Mekong River, this gentle giant feeds on ...