Flashlight Fish (a.k.a. Splitfin Flashlightfish)
Anomalops katoptron

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Range and habitat:
The flashlight fish is found in the Pacific Ocean from Indonesia, east to the Tuamoto Islands, north to southern Japan and south to the Great Barrier Reef. Flashlight fish hide in coral caves during the day, coming out only at night to feed.

Natural diet:
They eat zooplankton that they find at night using their bioluminescent photophores.

Size / weight range:
Some flashlight fish are eported to reach 10 to 14 inches, but most are less than 4 inches long.

Interesting facts:
Flashlight fish possess a pocket of luminescent bacteria below each of their eyes that glows bright green. The pocket of bacteria can be rotated inwards to turn the lights “out.” They use the light from these bacteria at night to see their food. They can also signal other nearby flashlight fish with their lights. By rapidly blinking their lights and then darting away in an unexpected direction, they can also escape many predators. Endangered species status: Not evaluated by the IUCN, not considered endangered.

Location at The Toledo Zoo:

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