The hybrid freshwater fish actually reproduces exclusively female clones, doing so for much longer than scientists thought ...

All-female species have been long thought of as evolutionary dead ends – but one fish has defied the odds to live without males, revealing new clues to how genomes stay healthy.

Atlantic sturgeon make so much noise during breeding, it's called a "thunder." Listening in can help scientists pinpoint ...

Fish stranded on shore often look helpless, all flops and wriggles. But that clumsy scramble may follow a surprisingly ...