bifasciatus, Cyprinodon Miller [R. R.] 1968:1, Fig. 1 [Occasional Papers of the Museum of Zoology University of Michigan No. 659; ref. 7905] Río Puente Colorado, about 11 kilometers south of Cuatro Ciénegas, Río Mesquites system, Coahuila, Mexico. Holotype: UMMZ 179835. Paratypes: FMNH 69520 (20); UMMZ 179836 (149. now 132), 177863 (100), 179197 (128), 179204 (178), 179212 (16), 179222 (130), 179830 (581), 179857 (53), 179879 (226), 181068 (88), 186303 (176); USNM 203255 (147). Type catalog: Ibarra & Stewart 1987:31 [ref. 12367]. •Valid as Cyprinodon bifasciatus Miller 1968 -- (Espinosa Pérez et al. 1993:33 [ref. 22290], Echelle & Echelle 1998:854 [ref. 23614], Lozano-Vilano & Contreras-Balderas 1999:385 [ref. 23796], Lazara 2001:82 [ref. 25711], Nelson et al. 2004:108 [ref. 27807], Miller 2006:299 [ref. 28615], Scharpf 2007:31 [ref. 30398], Page et al. 2013:107 [ref. 32708], Lozano-Vilano & De la Maza-Benignos 2016:17 [ref. 35401], Esmaeili et al. 2018:11 [ref. 36738], Page et al. 2023:142 [ref. 40505]). Current status: Valid as Cyprinodon bifasciatus Miller 1968. Cyprinodontidae: Cyprinodontinae. Distribution: Southern North America: thermal springs in Bolsón de Cuatro Ciénegas (Mexico). Habitat: freshwater.