Illustration of the silver spinyfin (Diretmus argenteus)—the vertebrate with the highest number of opsin genes. Image: (Alexandra Viertler, University of Basel) A newly discovered visual system in ...

WASHINGTON (Reuters) - While people and other vertebrates are color blind in dim light, some deep-sea fish may possess keen color vision to thrive in the near total darkness of their extreme ...

Aggressive little male fish from Indonesia turn black when angry to show their dominance, scientists discover. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

Fish living up to 1500 metres below the surface have developed surprisingly diverse vision that could help them determine predator from prey in the dimly-lit depths of their fish-eats-fish world. An ...