When animals have a slow metabolic rate, they do not age but rather have a prolonged life. Resistance to diseases and genetics are also factors that can contribute to the longevity of an animal.

If you've ever heard the urban legend about released pet alligators growing to colossal sizes in sewer systems, you might be ...

Fish like roach that migrate between lakes and streams have larger eyes with bigger pupils, improving vision in low light.

The nation’s top koi aficionados will bring their most spectacular fish — up to 3 feet long — to South San Jose to compete ...

Fish Are Smarter Than You Think When you think of pet training, dogs or parrots might come to mind—but what about fish? Most ...

Scientists discovered a new forest killifish in Kenya, revealing both evolutionary and tectonic history—but its habitat is ...

Doctoral candidate Jérémy de Bonville discovered crucial information for climate change scientists — and he did it using fish.

Roach fish that migrate between different lakes and water courses have larger pupils and better eyesight than roach fish that stay in one place. The adaptation makes it easier for the red-eyed ...

After decades of conflict, farmers and tribes say they’re working in concert to restore salmon habitat in the Klamath Basin. But two dams remain - one that blocks fish passage another that plays a key ...

Fish don’t exist. In her novel “Why Fish Don’t Exist,” Lulu Miller points out that a true “fish” clade containing an ancestor ...

The researchers studied tissue from over 120 fish. They found that 50 to 60 percent of their diet came from ocean’s twilight ...

The specimens were the bycatch of a fishing vessel in the South China Sea, which researchers later bought to study.