callopterus, Cryptocentrus Smith [H. M.] 1945:552, Pl. 9 (fig. B) [Bulletin of the United States National Museum No. 188; ref. 4056] Estuary of Chantabun River [Chantaburi River], southeastern Thailand. Holotype: USNM 119572. Paratypes: USNM 119573-76 (4, 1, 1, 2). Type catalog: Vilasri et al. 2018:63 [ref. 36451]. •Valid as Cryptocentrus callopterus Smith 1945 -- (Larson in Randall & Lim 2000:636 [ref. 25122], Kottelat 2013:405 [ref. 32989], Vilasri et al. 2018:63 [ref. 36451], Parenti 2021:125 [ref. 38603]). Current status: Valid as Cryptocentrus callopterus Smith 1945. Gobiidae: Gobiinae. Distribution: Western Pacific: Gulf of Thailand (Thailand). Habitat: brackish, marine.