A quiet neighboring species changed how sticklebacks select their mates. Just one new species can alter the path of their ...

A simple change in species composition can impact the course of evolution: A research team from the University of Bern and the University of British Columbia in Canada shows that the presence of just ...

Researchers in Alberta uncovered a fossil fish that rewrites the evolutionary history of otophysans, which today dominate ...

The extinct animal's face structure could help explain how vertebrates, including ourselves, evolved our distinctive look.

Male spotted ratfish have true teeth on a forehead appendage used for mating. Across vertebrates, teeth share many defining ...

Primeval fish that were thought to be "living fossils," largely unchanged since the time of the dinosaurs, are actually evolving dramatically — and they evolved faster when Earth's continents moved ...

A 70-million-year-old fossil fish from Alberta, Acronichthys maccognoi, is the oldest North American otophysan. Its discovery reshapes freshwater evolution, revealing these fish may have transitioned ...

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 ...

Through advanced isotopic analyses, Rodnyel Arosemena seeks to understand how fish in the Caribbean and the Pacific that had a common ancestor take advantage of the resources of their different ...

Whole skeleton of Dipterus, an extinct lungfish from the middle Devonian period. Specimen (UMMP 16140) from the University of Michigan Museum of Paleontology. ANN ARBOR—If you're reading this sentence ...

On this World Anatomy Day, Oct. 15, experts in the Center for Functional Anatomy and Evolution at Johns Hopkins Medicine are ...

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