A "four-eyed" fish swims along the surface with eyes appearing both in and out of the water. New research explains how the fish simultaneously sees in these two very different environments. The ...
“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, ...
This story appears in the April 2017 issue of National Geographic magazine. The fish’s eyes are ideally suited to helping it thrive and propagate. The fish’s loins, on the other hand, are a somewhat ...
A "four-eyed" fish swims along the surface with eyes appearing both in and out of the water. New research explains how the fish simultaneously sees in these two very different environments. The ...
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