In the depths of the ocean, where there’s no sunlight and the pressure could crush a submarine, a handful of animals have ...

While the common ancestor of vertebrates with synovial joints is still a mystery, the oldest specimen with evidence of these ...

Fish don’t exist. In her novel “Why Fish Don’t Exist,” Lulu Miller points out that a true “fish” clade containing an ancestor ...

One of the most important milestones in the evolution of life began some 400 million years ago, when the first animals made their way from water onto land. At that time, known as the Devonian ...

“This is the most comprehensive scientific publication on the distribution of fish bioluminescence ever written, and the authors show that bioluminescence evolved way more times independently than ...

Read More: Does Evolution Take Millions of Years or Does it Happen in Sudden Bursts? Among the fishes, there are a few options for teeth: Some fish sport "simple" conical teeth, while others sport ...

Deep-sea fish adapt to some of the most extreme conditions on Earth. New research analyzing their evolution finds the same ...

For years, scientists felt like the fish they were watching watched them back. A new study suggests they can recognize a diver's outfit.

Wrasse fish use hard surfaces as tools to crack open prey. This behavior shows flexible thinking and environmental awareness.

Tracing the evolution of deep-sea fishes, the researchers' analysis revealed that the eight lineages of fish species studied entered the deep-sea environment at different times: The earliest ...