Zestichthys tanakae:
FMNH 58841, holotype, 490 mm, Japan, Kushiro; USNM 160718, 317 mm, Japan, Honshu, 38.19°N, 142.13°W, 479 m depth; USNM 161445, 299 mm, Japan, Honshu, 38.19°N, 142.13°W, 479 m depth.