Fish can change their teeth quickly, which speeds up their evolution. Cichlids in African lakes show the fastest ...

Every year, the aquatic animals die off when the swamp dries up, leaving their eggs behind to hatch when the rains return.

For 162 million years, sturgeons have fended off everything they’ve faced. Now scientists are racing to save these living ...

Near an island in the South Pacific Ocean, a bright red sea creature with “canine-like” teeth swam around the coral reef.

If you can no longer care for a live goldfish, the United States Fish & Wildlife Service recommends trying to find another ...

By Christine Sampson In her fifth grade class at Sag Harbor Elementary School, 10-year-old Abby Falkowski has been learning ...

It turned out to be a new species. In the 1970s ... Very little is known about the lifestyle of tropical single-spined scorpionfish, the study said. The fish were found in “shallow coral ...

Reasons to be Cheerful reports on river Seine, the storied French waterway that was once nearly biologically dead but is not ...

Ahead of dyeing the river green for St. Patrick’s Day, we look back at what has made the river healthy again since its ...