These days, all fish have teeth. The shapes of their teeth vary according to diet, ranging from the little pegs of goldfish ...

The Amazon molly reproduces without sex. A genomic copy-and-paste trick called gene conversion may explain how it avoids evolutionary meltdown.

Scientists have uncovered new clues about some of Earth’s earliest fish, shedding light on the ancient origins of vertebrates ...

Reef fish in different oceans often develop similar color patterns because evolution explores the same set of biological ...

It was quite the rollercoaster first week of the 2026 league year for the Baltimore Ravens. General manager Eric DeCosta ...

For decades, scientists used a mirror experiment to explore whether animals could recognize themselves. In that test, ...

In Lake Malawi, hundreds of species of cichlid fish have evolved with astonishing speed, offering scientists a rare opportunity to study how biodiversity arises.

Fossils found in Niger belong to a newly identified Spinosaurus species that had a dramatic skull crest and likely hunted ...

A tiny fossil fish, roughly 3 centimeters long and approximately 436 million years old, has been identified as the oldest ...

Scientists discovered some of the oldest bony fish fossils in China. The fossils explain the early history of animals with ...

A major new discovery is shedding light on the early origins of vertebrates. Fossils of some of the oldest known bony fish, found in China, have revealed key details about the evolution of bones, ...