Freshwater fish live in rivers, lakes, and ponds with low salt content, while saltwater fish come from oceans with high salinity. This difference affects everything—from tank setup and maintenance to ...

Add Yahoo as a preferred source to see more of our stories on Google. Snakeheads should top every angler's to-do list. What makes some fish wildly popular, while others fall completely off the radar?

Some of the longest, most important migrations of species on Earth are happening beneath the surface of the world's rivers and many are rapidly collapsing, according to a major new assessment by the ...

When saltwater fish long ago evolved to live in fresh water, many of them also evolved a more sophisticated hearing system, including middle ear bones similar to those in humans. Two-thirds of all ...

A sweeping global report finds that migratory freshwater fish are in steep decline, with populations down roughly 81% since 1970. These species depend on long, connected rivers, but dams and human ...

A woman selling fish in a market in the Mekong Delta, Vietnam. From Ancient Egypt to the Zhou Dynasty to first century Palestine, fish have symbolized wealth and abundance, demonstrating the ancient ...

Migratory freshwater fish populations have declined 81 percent globally since 1970. 97 percent of listed migratory fish species are threatened with extinction, with hundreds more newly identified as ...

The 24-hour hotline saving the world’s biggest freshwater fish The 24-hour hotline saving the world’s biggest freshwater fish These 'trash fish' are among Earth's most primitive animals These 'trash ...