Polyipnus triphanos

{{Short description|Species of fish}}

{{Speciesbox

| image = Potri uc.jpg

| genus = Polyipnus

| species = triphanos

| authority = Schultz, 1938 {{cite WoRMS |author=Bailly, Nicolas |year=2015 |title=Polyipnus triphanos Schultz, 1938 |id=275002 |accessdate=28 February 2016|db=}}

}}

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 {{convert|322|and|966|m|-2}}.{{cite web |url=http://www.fishbase.org/summary/Polyipnus-triphanos.html |title=Polyipnus triphanos Schultz, 1938 |publisher=FishBase |accessdate=28 February 2016}}