regani, Cichlasoma Miller [R. R.] 1974:466, Fig. 1 [Proceedings of the Biological Society of Washington v. 87 (no. 40); ref. 7522] Río Almoloya, Oaxaca, Mexico, 33 km north of 16°45'N, 95°01'W [probably circa 17°0'16"N, 95°0'50"W, E. Schraml pers. commun. 12/19] , elevation about 250 meters. Holotype: UMMZ 184756. Paratypes: KU 1573-74 (2); UMMZ 178529 (1), 184757 (12, now 11); USNM 102255 (1). •Valid as Cichlasoma regani Miller 1974 -- (Conkel 1993:149 [ref. 22949], Espinosa Pérez et al. 1993:70 [ref. 22290], Nelson et al. 2004:152 [ref. 27807]). •Valid as Vieja regani (Miller 1974) -- (Burgess 2000:50 [ref. 24818], Kullander in Reis et al. 2003:646 [ref. 27061], Miller 2006:384 [ref. 28615]). •Valid as Paraneetroplus regani (Miller 1974) -- (McMahan et al. 2010:1298 [ref. 31111], Page et al. 2013:157 [ref. 32708], Paepke et al. 2014:55 [ref. 33351]). •Valid as Maskaheros regani (Miller 1974) -- (McMahan et al. 2015:217 [ref. 33920], Říčan et al. 2016:45 [ref. 34357], López-Segovia et al. 2020:110 [ref. 38151], Gómez-Martínez et al. 2022:237 [ref. 39506]). Current status: Valid as Maskaheros regani (Miller 1974). Cichlidae: Cichlinae. Distribution: Southern North America: Coatzacoalcos River basin, Atlantic slope of Mexico. Habitat: freshwater.