imperceptum, Myctophum Becker [V. E.] & Borodulina [O. D.] 1971:422 [332], Fig. 4 [Voprosy Ikhtiologii v. 11 (no. 3); ref. 484] Pacific, 9°30'S, 156°30'E, Vityaz station 6052, surface. Holotype: ZIN 39910. Paratypes: (3). Type catalog: Balushkin & Prirodina 2020:78 [ref. 37828]. On p. 332 of English translation. Based on specimens and literature citations. •Questionably a synonym of Myctophum obtusirostre Tåning 1928 -- (Paxton 1979:16 [ref. 6440]). •Valid as Myctophum imperceptum (Becker & Borodulina 1971) -- (Balushkin & Prirodina 2020:69 [ref. 37828]). Current status: Valid as Myctophum imperceptum Becker & Borodulina 1971. Myctophidae: Myctophinae. Distribution: Pacific. Habitat: marine.