fish

Rather than making its own light, a shallow-water marine fish gets all the tools that it needs for bioluminescence production from eating tiny, glowing crustaceans.

This 1-centimenter-long frogfish is one of the many subjects of marine photographer Richard Smith.

The Penn State University scientist was known for her work on fish’s perception of pain.

This fish-inspired robot swims at greater speeds than previous ones.

Researchers categorize the different jaws of piscivorous fishes.

The same study also finds there are three species of Electrophorus, rather than one.

The bioluminescent Anomalops katoptron can coordinate its schooling behavior after dark. 

The fish’s undiscerning palate might make more of the lake habitable to the species than once thought, according to a new study.

To see if the spiky fish shares signaling pathways found in other organisms, scientists scooped up specimens during a mating frenzy on the shores of Japan.

Maternal care for the fish alters the structure of their developing heads.

Scientists create a soft-bodied robotic fish that pumps synthetic blood and swims on its own.

See a close-up of the deep-sea dragonfish’s transparent teeth.

A fossil of a school of fish from the Eocene appears to represent coordinated collective movement.

The silver spinyfin has an extraordinary diversity of rod photopigments, which researchers propose may allow it to see color in the deep, dark sea.

Gulf killifish have made a stunning comeback in Houston with the help of genetic mutations imported from interspecies mating with Atlantic killifish.

Fossils reveal the quick death of plants and animals from a massive surge of water after the impact 66 million years ago, which is thought to have spelled the demise of dinosaurs.

Nearly 50 years after its development, only a handful of creatures have passed the self-awareness exam. A new attempt with fish highlights a debate over the test’s use and meaning.

Freshwater fish suffer from low levels of oxygen in the country’s rivers, while bats are unable to survive the extreme air temperatures.

From cellular self-digestion to the effects of exercise on the brain, our features editor picks her favorite art custom-made for the magazine.