Greek, bathys = deep + Latin, gobius = gudgeon (Ref. 45335).
Frillfin - in reference to the free pectoral fin rays in the dorsal portion of the fin (Ref. 85559:149).
Etymology of specific name :
Name is derived from the past participle of the Latin verb 'geminare', meaning paired, doubled, or repeated, referring to the diagnostic pattern of vertically paired spots that are repeated 6-7 times laterally along the body of this species.