Flashlight Fish

Flashlight Fish

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Credit: Dante Fenolio/SCIENCE PHOTO LIBRARY

Caption: Flashlight fish are in the family Anomalopidae. The Splitfin or Giant Flashlight Fish, Anomalops katoptron, is the largest of the Flashlight Fish and is native to the Indo-Pacific. Flashlight Fish are famous for their bioluminescent organs (photophores) below each eye. The organ accommodates live bioluminescent bacteria that produce a bright white, greenish, or slightly blue light. The bacteria and the fish are truly engaged in a symbiotic relationship. The fish needs the light to find food and communicate to other Flashlight Fish; the bacteria can not survive long-term any place else on Earth but inside the photophores of their respective Flashlight Fish species. In Anomalops, the organ can be rotated outward or inward, likewise flashing the light on

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Keywords: anomalopidae, anomalops, anomalops katoptron, bioluminescence, bioluminescent, bioluminescent bacteria, bioluminous, flashlight fish, giant flashlight fish, glowing, indo-pacific fish, light organ, photophore, splitfin flashlight fish, symbiotic relationship

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