nezahualcoyotl, Xiphophorus Rauchenberger [M.], Kallman [K. D.] & Morizot [D. C.] 1990:6, Fig. 4 [American Museum Novitates No. 2975; ref. 15688] Arroyo Gallitos, 0.5 kilometers west of Gallitos, Tamaulipas, Mexico. Holotype: AMNH 88334. Paratypes: AMNH 75845 (orig. 30), ?UMMZ 223205 [ex AMNH 75845] (4). Additional material: AMNH (22 lots, 1070). •Valid as Xiphophorus nezahualcoyotl Rauchenberger, Kallman & Morizot 1990 -- (Espinosa Pérez et al. 1993:56 [ref. 22290], Rodriguez 1997:674 [ref. 23266], Morris et al. 2001:69 [ref. 25123], Meyer & Schartl 2002:59 [ref. 26066], Lucinda in Reis et al. 2003:574 [ref. 27061], Nelson et al. 2004:106 [ref. 27807], Lucinda & Reis 2005:44 [ref. 29205], Miller 2006:262 [ref. 28615], Scharpf 2007:24 [ref. 30398], Page et al. 2013:111 [ref. 32708], Meyer 2015:401 [ref. 34698], Huber 2019:150 [ref. 36941], Page et al. 2023:148 [ref. 40505]). Current status: Valid as Xiphophorus nezahualcoyotl Rauchenberger, Kallman & Morizot 1990. Poeciliidae: Poeciliinae. Distribution: Southern North America: upper Río Tamesi basin, San Luis Potosí, Atlantic slope (Mexico). Habitat: freshwater.