The discovery of a golden scaleless fish in China is helping scientists understand how animals evolved to live in caves.

A study published in the Nature journal alters how the evolution of fish has been historically understood. Fossilized fish and other sea creatures have often been pivotal in new scientific discoveries ...

A visualization of Tiktaalik roseae, an extinct aquatic animal with fossils that shed light on the evolution of land animals from marine animals millions of years ago. Nobu Tamura via Wikimedia ...

When we say that someone is a “fish out of water,” we sometimes mean to suggest that they are uncomfortable or out of their ...

Fossils over 300 million years old reveal the evolution of a tongue bite in an ancient group of deep-bodied ray-finned fishes, such as Platysomus parvulus. Experts have uncovered the earliest known ...

It's not what you do, it's how readily you do it. Rapid evolutionary change might have more to do with how easily a key innovation can be gained or lost rather than with the innovation itself, ...

A comparison of the fast-growing fish-eating Baltic herring (Slåttersill in Swedish) and slow-growing plankton-eating spring- and autumn-spawning Baltic herring. Photo: Leif Andersson. Atlantic and ...

David Kingsley, a professor of developmental biology at Stanford University, remembers visiting a small aquarium at the Marine Biological Laboratory (MBL) in Woods Hole, Mass., in 2016 and coming upon ...

A fossil found in 1971 has been re-identified as the earliest known animal built to walk on land, a salamander-like creature that marked a previously unknown stage in the evolution of fish into the ...