bilineatus, Cerdale Clark [H. W.] 1936:394 [Proceedings of the California Academy of Sciences (Series 4) v. 21 (no. 29); ref. 839] Indefatigable [Santa Cruz] Island, Galápagos Islands. Holotype (unique): CAS 3245. •Valid as Clarkichthys bilineatus (Clark 1936) -- (Dawson 1974:440 [ref. 7122], Grove & Lavenberg 1997:561 [ref. 24023] [but see McCosker 1998:810 [ref. 24025]], Nelson et al. 2004:173 [ref. 27807], Love et al. 2005:163 [ref. 37547], McCosker & Rosenblatt 2010:194 [ref. 30957], Van Tassell 2011:146 [ref. 31732], Page et al. 2013:179 [ref. 32708], Fourrière et al. 2016:Suppl. p. 15 [ref. 42488], Parenti 2021:382 [ref. 38603], Grove et al. 2022:18 [ref. 41326], Page et al. 2023:125 [ref. 40505], Fricke et al. 2024:327 [ref. 41622], Victor et al. 2024:78 [ref. 42021]). Current status: Valid as Clarkichthys bilineatus (Clark 1936). Gobiidae: Microdesminae. Distribution: Eastern Pacific: southern tip of Baja California Sur (Mexico) south to Ecuador, including Cocos Island (Costa Rica) and Galapagos Islands (Ecuador). IUCN (2025): Least Concern. Habitat: marine.