Here are our favorite types of freshwater fish you can keep as a pet. If you're in the throes of setting up a home aquarium, ...

In New Zealand, there is a rare species of fish with “large eyes,” a short body and a “preference for swampy habitats.” Noting its similarities to one of J.R.R. Tolkien’s most iconic characters, some ...

A pending world-record alligator gar caught by Art Weston is the heaviest freshwater fish ever landed on 2-pound test.

The Trump administration intends to overhaul the Endangered Species Act by changing what it means to harm an endangered or ...

Louisiana has become home to numerous invasive species, some of them wreaking havoc on the state's environment. Here are the ...

The Puget Sound Estuarium and Deschutes Estuary Restoration Team (DERT) are working on the critters and plants that will ...

The ricefield eel (Monopterus albus) is the only protogynous hermaphrodite freshwater fish. How this species changes its sex ...

RICHMOND — The James River Association recently highlighted alarming declines of migratory fish in the James River. The ...

Conservationists say the southern bog turtle and roughhead shiner deserve endangered status as nonnative species threaten the ...

Alabama bass, an invasive species, are making their way into North Carolina's freshwater systems, posing a significant threat to native fish populations, partic ...