All-female species have been long thought of as evolutionary dead ends – but one fish has defied the odds to live without ...

The Amazon molly, an all-female fish, has defied evolutionary expectations by surviving for 100,000 years without males. This ...

In the mystical world of evolution, the extinction of male species has always been seen as an end of evolution, but this rare ...

A tiny river fish, the Amazon molly, has survived 100,000 years without males, revealing alternative ways life maintains ...

Add Yahoo as a preferred source to see more of our stories on Google. Thousands of fish species — about 2,500 of them named — call the Amazon River home, but scientists estimate nearly half of the ...

Increasingly prolonged and intense droughts in the Amazon pose a deadly threat to the native Amazonian manatee, lowering river levels that expose these giant aquatic mammals to poachers.

Although new to science, the treefrog already faces numerous threats to its survival in the southern Brazilian Amazon where it was found. Researchers have discovered a new, color-changing species of ...

(CNN) — Picture a dolphin. Now imagine one that’s twice the size of a person. Around 16 million years ago, a dolphin giant cruised the depths of its watery domain. But unlike most modern dolphins, its ...