Invasive northern snakeheads can “walk” on land, breathe air and survive out of water for several days, and they also compete with native species in waterways ...

Building a vibrant aquarium on a budget is easier than you might think. Freshwater fish offer an affordable way to create a lively and beautiful aquatic environment. Here are 10 cost-effective options ...

Environmentalists on Thursday revived efforts to protect a freshwater East Coast mussel called the brook floater.

At the base of the Grand Teton Mountain range, a new fish species tinged with green was identified as separate from its blue brethren.