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.

A remarkable fish species, the Amazon molly, has defied evolutionary norms by surviving for 100,000 years without males.

University of Missouri researchers have shown how an all-female fish species called the Amazon molly defies the long-held belief that asexual reproduction is an evolutionary dead end. The key is gene ...