Neosalanx

The ariakehimeshirauo (Japanese: アリアケヒメシラウオ, 有明姫白魚 ariake·hime·shira·uo, meaning 'dawn princess ice fish'), Neosalanx reganius, is a species of icefish in the family Salangidae endemic to Japan. It is only known from Midori and Chikugo Rivers in Kyushu. Its maximum total length is , and has a lifespan of about one year. It seems to be relatively rare in its limited habitat, and is classified as an endangered species by IUCN.

Neosalanx is a genus of icefishes native to Eastern Asia, ranging from Korea, through Japan and China, to Vietnam. They inhabit coastal marine waters, estuaries and river basins (including lakes). There are both species that are threatened and species that are widespread.

species of fish