A remarkable fish species, the Amazon molly, has defied evolutionary norms by surviving for 100,000 years without males.

As the creator put it, a "hidden highway" appeared — a network of subsurface waterways that may have allowed the fish to ...

Reef fish evolved the ability to feed by biting prey from surfaces relatively recently, a UC Davis study shows. The innovation has driven an explosion of evolution in reef fish. Image shows a rainbow ...

Learn more about Qreiya 3 Lagerstätte, a fossil-rich site that could help fill key gaps in marine evolution.

Fish stranded on shore often look helpless, all flops and wriggles. But that clumsy scramble may follow a surprisingly ...

After an asteroid slammed into Earth 66 million years ago, there is very little evidence of fish in the fossil record. Now, a ...

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 new study of the freshwater greenfin darter fish suggests river erosion can be a driver of biodiversity in tectonically inactive regions. New findings could explain biodiversity hotspots in ...

This new international study is calling for a major rethink of how rivers are managed, arguing that fish are not just passive victims of environmental change but active participants in a feedback loop ...

3D rendering of the tiktaalik, an extinct walking fish. Dotted Yeti/Shutterstock When you think about human evolution, there’s a good chance you’re imagining chimpanzees exploring ancient forests or ...

Why do you think giraffes have such long necks? It’s a question that has perplexed scientists for years. Do you think giraffes have long necks to reach food in high places? Maybe you are onto ...

Coral reefs are home to a spectacular variety of fish. A new study shows that much of this diversity is driven by a relatively recent innovation among bony fish -- feeding by biting prey from surfaces ...