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

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

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

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

Scientists discovered new fish species. These include a blob-headed catfish, a tiny pipehorse, and three pacu species.

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

African penguins are classified as a critically endangered species by the International ... In the springtime, aquarium staff train the penguin chicks to eat whole fish — when they are around ...

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 ...

This suggests that the "plastic floors and concrete ceilings" principle, which was originally developed in colder-water species, does not hold for tropical fish dealing with shifting temperature ...

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