chrysogaster, Agosia Girard [C. F.] 1856:187 [23] [Proceedings of the Academy of Natural Sciences of Philadelphia v. 8; ref. 1810] Río Santa Cruz, Sonora, Mexico. Syntypes: MCZ 1957 [ex USNM 81] (1), USNM 81 (orig. 8, now 0, 3 pharyngeal arches as #2684). Type catalog: Gilbert 1998:60 [ref. 23395]. On p. 23 of separate. •Valid as Rhinichthys chrysogaster (Girard 1856) -- (Gilbert 1998:60 [ref. 23395], Fuller et al. 1999:147 [ref. 25838]). •Valid as Agosia chrysogaster Girard 1856 -- (Branson et al. 1960:219 [ref. 41482], Lee et al. 1980:141 [ref. 22416], Page & Burr 1991:79 [ref. 18983], Espinosa Pérez et al. 1993:9 [ref. 22290], Nelson et al. 2004:68 [ref. 27807], Scharpf 2005:10 [ref. 28940], Miller 2006:103 [ref. 28615], Minckley & Marsh 2009:110 [ref. 31114], Page & Burr 2011:175 [ref. 31215], Page et al. 2013:68 [ref. 32708], Page et al. 2023:66 [ref. 40505], Fricke et al. 2024:163 [ref. 41622]). Current status: Valid as Agosia chrysogaster Girard 1856. Leuciscidae: Pogonichthyinae. Distribution: Southwestern North America: Southwestern U.S.A. (New Mexico and Arizona), and Pacific watersheds of Sinaloa and Sonora (Mexico). Habitat: freshwater.