“Hey, four-eyes!” That playground taunt is more accurate when applied to Anableps anableps—a fish related to the guppy. It lives in the brackish waters of mangrove swamps in central and South America, ...

A "four-eyed" fish swims along the surface with eyes appearing both in and out of the water. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive content. New ...

The fish - known as anableps - originally come from the rivers of South America where they use their bizarre eyes to see both above and below the water's surface at the same time. The pupil in each ...

Four-eyed fishes of the genus Anableps and their relatives are a fish family from the Neotropics with a number of bizarre traits that have fascinated naturalists for centuries. These include: (i) a ...

A "four-eyed" fish swims along the surface with eyes appearing both in and out of the water. Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive content. New ...