Fish eyes go green

Scientists find a surprise in the lens of a fish that lives in the dark

By Stephen Ornes, 19:37 PM January 25, 2012




By the light of day, a greeneye fish seems ordinary: It has a long, narrow body and a small head topped with large, upward-glancing eyes. But if you cut out the bright lights and turn on a dim blue-violet bulb, those eyes glow with an eerie, green hue. That’s because their lenses are fluorescent, which means they absorb one color of light and emit another.


Scientists are now beginning to understand the advantages this gives the species.


If you’re a fish that sees mostly green, a lens that c...

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