Diogenichthys atlanticus (Tåning, 1928).

Longfin Lanternfish. To 3.6 cm (1.4 in) SL (Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California). Circumglobal; western Pacific Ocean north to Japan (Nakabo in Nakabo 2002); northern California (Berry and Perkins 1966) to northern Chile (Sielfeld et al. 1995). Mesopelagic (Hulley and Paxton in Carpenter and De Angelis 2016); depth: surface to 1,720 m (5,640 ft) (min.: Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California; max: Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California). A record of 5,041 m (16,534 ft) (Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California) was based on the maximum depth fished by a non-closing midwater trawl and may represent a catch shallower than the maximum depth.