mexicanus, Hyporhamphus Álvarez [J.] 1959:71 [Ciencia (Mexico City) v. 19 (nos 4-5); ref. 11974] Rancho San Carlos, Río Coatzacoalcos, Palomares, Oaxaca, Mexico. Holotype (unique): PNCB 403. •Valid as Hyporhamphus mexicanus Álvarez 1959 -- (Espinosa Pérez et al. 1993:32 [ref. 22290], Castro-Aguirre et al. 1999:211 [ref. 24550], Collette in Reis et al. 2003:589 [ref. 27061], Collette 2004:9 [ref. 27583], Nelson et al. 2004:101 [ref. 27807], Miller 2006:205 [ref. 28615], Scharpf 2007:10 [ref. 30398], Banford 2010:347 [ref. 31088], Page et al. 2013:102 [ref. 32708], Collette & Bemis 2019:117 [ref. 37342]). Current status: Valid as Hyporhamphus mexicanus Álvarez 1959. Hemiramphidae. Distribution: Usumacinta River drainage and Coatzacoalcos River, draining into Gulf of Campeche Bay, Gulf of Mexico: Guatemala and Mexico. Habitat: freshwater.