Paraliparis selti, the blue Atacama snailfish, is a species of deep water snailfish that is native to the south-east Pacific Ocean hadal zone 6,714 meters under water in the Atacama Trench (Peru–Chile Trench).

[1] Paraliparis selti has low large blue eyes similar in appearance to shallow water snailfish species.

The main pigmentation of Paraliparis selti is blue but turns a dusky color when preserved.

P. selti also has a comparatively low number of pectoral fins only having 18.

[4] When P. selti was discovered in 2022, scientist named the new species Paraliparis selti with "Paraliparis" being its genus and the species name, "selti" meaning blue in the Kunza language (an extinct language in northern Chile and Peru).