Green gleam helps fish see violet

Fish's eyes apparently glow to pick up hard-to-detect hues

CHARLESTON, S.C. — The greeneye fish views its stygian home through fluorescent lenses that turn one color into another, researchers propose, making glowing green images of hard-to-see violet objects.

“Crazy” is what Yakir Gagnon of Duke University cheerfully called the fish-vision idea he and his colleagues presented January 4 at the annual meeting of Society for Integrative and Comparative Biology.