Fish like roach that migrate between lakes and streams have larger eyes with bigger pupils, improving vision in low light.

Roach fish that migrate between different lakes and water courses have larger pupils and better eyesight than roach fish that stay in one place. The adaptation makes it easier for the red-eyed ...

Roach fish that migrate between different lakes and water courses have larger pupils and better eyesight than roach that stay ...

Sunlight filtered through the trees of a rainforest in northern Peru and illuminated an “iridescent” creature. Its “golden” eyes scanned the surroundings — but it wasn’t the only one looking. Passing ...