For example, there are koi with light blue spots, ones with large red patches on their backs, or all-metallic gold. But the most winning fish often just boil down to these three varieties.

A stellar nursery 3,600 light-years away from Earth has taken the shape of a brilliant koi fish. Astronomers in Chile captured the celestial swimmer using the VLT Survey Telescope (VST), offering ...

A type of salamander, axolotls often appear pink due to a genetic trait called leucism, which causes a pale or pinkish skin tone. Found in the Amazon River, the pink river dolphin is renowned for its ...