A new study indicates the adaptable birds evolved into distinct lineages as isolated populations shifted to match their ...

When researchers moved medaka—a fish commonly used in experiments—out of the lab and into more natural conditions, their reproductive clock shifted by hours, suggesting that laboratory findings may ...

California sea otters maintain a warm body temperature in cold waters, which increases their energy demands to about three ...

A lot of people expect fish to just drift around the tank and mind their business. Then they notice certain species waiting ...

Per and polyfluoroalkyl substances (PFAS), often called "forever chemicals," are now found almost everywhere scientists look.

The fish, who live in pitch-black darkness, likely use their bioluminescent lures to find mates. Males then attach themselves ...

Between wedding planning and work, reporter Savanna Tenenoff and her fiancé Alan Rivenbark decided their next adventure was ...

Betta fish have become one of the most popular freshwater aquarium pets in recent years. Known for their bright colors, ...