The decades-old signature of nuclear testing can reveal the ages of organisms, or even individual cells.

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.