eximius, Cyprinodon Girard [C. F.] 1859:158 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 11 (nos. 60-77); ref. 18087] Río Chihuahua [= Río Chuviscar at Chihuahua City], Mexico. Syntypes: ANSP 7223 (1), MCZ 1308 [ex USNM] (1), MNHN 0000-0452 [ex USNM] (1). Type catalog: Böhlke 1984:96 [ref. 13621]. •Valid as Cyprinodon eximius Girard 1859 -- (Lee et al. 1980:496 [ref. 22416], Minckley & Minckley 1986:188 [ref. 8066], Page & Burr 1991:230 [ref. 18983], Espinosa Pérez et al. 1993:33 [ref. 22290], Lozano-Vilano & Contreras-Balderas 1993:307 [ref. 21105], Echelle & Echelle 1998:854 [ref. 23614], Lazara 2001:85 [ref. 25711], Lozano-Vilano 2002:21 [ref. 27832], Nelson et al. 2004:108 [ref. 27807], Miller 2006:302 [ref. 28615], Scharpf 2007:32 [ref. 30398], De la Maza-Benignos & Vela-Valladares 2009:185 [ref. 30539], Page & Burr 2011:460 [ref. 31215], Page et al. 2013:107 [ref. 32708], Lozano-Vilano & De la Maza-Benignos 2016:20 [ref. 35401], Esmaeili et al. 2018:12 [ref. 36738], Page et al. 2023:142 [ref. 40505]). Current status: Valid as Cyprinodon eximius Girard 1859. Cyprinodontidae: Cyprinodontinae. Distribution: Southern North America: Texas (U.S.A.) and northern Mexico. Habitat: freshwater.