''Polyipnus triphanos'', commonly known as the threelight hatchetfish, is a species of
ray-finned fish in the
family Sternoptychidae. It occurs in deep water in the Indo-Pacific Ocean, at depths between about .
References
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{{Taxonbar, from=Q2447170
Sternoptychidae
Fish described in 1938
Taxa named by Leonard Peter Schultz