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 ...

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 ...

Experts say fish jump from their bowls for a variety of reasons (Reuters) Many fish owners will no doubt have had a problem with their pet's apparent deathwish - jumping out of their bowls and into ...

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 ...

A species of cave fish has been documented 'walking' up waterfalls like a lizard, in a discovery which could have "major" implications for our understanding of evolution. A team of researchers from ...

If you studied evolution in school, you probably remember that chart that showed fish living in the water and then moving onto land. Watching the blenny species of fish is like seeing evolution happen ...

To escape predators beneath the waves, a flying fish can shoot out of the water and glide long distances because its paired pectoral and pelvic fins, longer and more rigid than those of other fish, ...

A slimy eel-like creature called the hagfish is the only known animal with a skull but no backbone, and is completely blind. This bizarre water-dweller is currently thought to be evolving the ability ...

Approximately 380 million years ago a violent sea-dwelling predator terrorised the tropical lagoon habitat. For this fish was equipped with more than a terrifying array of razor-sharp teeth – the ...