Lampanyctus festivus Tåning, 1928.

Festive Lanternfish. To 15.7 cm (6.2 in) (Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California). Circumglobal; western Pacific Ocean north to Japan; in eastern Pacific Ocean as far northward as central California (35°58’N, 122°32’W) (Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California). Mesopelagic; depth: 0–1,800 m (5,904 ft) (Porteiro et al. 2017). A record of 3,600 m (11,808 ft) (Personal communication: Scripps Institution of Oceanography Fish Collection, La Jolla, California) was based on the maximum depth fished by a midwater trawl and may represent a catch shallower than the maximum depth. The eastern Pacific form could be L. festivus, Lampanyctus tenuiformis (Brauer, 1906) or an unrecognized species (Benjamin Frable).