triops, Opistognathus Smith-Vaniz [W. F.] 2023:95, Figs. 11D, 18G, 153-154 [Zootaxa 5252 (no. 1); ref. 40049] Deep reef slope off southwest side of Ofolanga Island, Ha'apai Group, Tonga Islands, 19°36'15"S, 174°28'15"W, depth 21 - 32 meters. Holotype: USNM 327793. Paratypes: USNM 342223 (2), 359743 (1). •Valid as Opistognathus triops Smith-Vaniz 2023 -- (Fujiwara et al. 2023:362 [ref. 40475]). Current status: Valid as Opistognathus triops Smith-Vaniz 2023. Opistognathidae. Distribution: Western Pacific: Tonga and Vanuatu. Habitat: marine.