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 ...

Theories of evolution were developed without an understanding of genetics, and while our ability to study genes has advanced tremendously, those advancements have happened only in the past few decades ...

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, ...

Evolution is usually viewed as a slow process, with changes in traits emerging over thousands of generations only. Over the recent years, however, research has indicated that adaptation in specific ...

"During food intake, the water flows through the permeable funnel wall, is filtered, and the particle-free water is then ...

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 ...

Scientists have traced the origin of fingers and toes to fish-like creatures that roamed the seas 380 million years ago, according to a new study. The findings, published in Nature, up-end the ...

Researchers have identified the genetic basis of rapid adaptation using a native fish species. They compared threespine stickleback fish from different habitats in the Lake Constance region. Their ...

A beautifully preserved fossil of an ancient fish shows the evolution of the bones in our hands started before animals emerged onto land. Palaeontologists have discovered the almost complete skeleton ...

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 ...