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 ...

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 ...

Along the murky bottom of the Amazon River, serpentine fish called electric eels scour the gloom for unwary frogs or other small prey. When one swims by, the fish unleash two 600-volt pulses of ...

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

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 ...

What scientists called one cavefish turned out to be three. A new cavefish species had been evolving in isolation for eight ...

Why are there so many of species of coral reef fish? According to a new study, it’s because about 50 million years ago, some fish figured out how to bite food from hard surfaces. Evolution doesn’t ...

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 ...

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

For years, river restoration has followed a familiar script. Remove barriers where possible, reconnect fragmented waterways ...

The snipe eel (right) and anglerfish illustrate the extremes of body shapes in deep ocean fishes. (Images from Scripps Institute of Oceanography via Oceana.org) The deep ocean is home to many strange ...

Ancient fish fossils from Egypt fill a 10-million-year gap, revealing how modern ocean fish emerged after the asteroid ...