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 ...

Fri, March 27, 2026 at 11:32 AM UTC This tiny surprise was almost missed entirely. Scientists noticed a gelatinous egg mass drifting in a tank of the Aquarium’s Wild Reef exhibit, home to the Aquarium ...

In 1981, scientists discovered that female fish exposed to high temperatures developed testes instead of ovaries. Since then, over 1,100 studies on different animal species, including 400 on ...