melanoccus, Chirostoma Álvarez [J.] 1963:127 [Anales de la Escuela Nacional de Ciencias Biológicas, México v. 12 (nos 1-4); ref. 901] Presa San Juanico, near Cotija, Michoacan, Mexico. Holotype: not researched. Paratypes: (75). •Valid as Chirostoma melanoccus Álvarez 1963 -- (Espinosa Pérez et al. 1993:60 [ref. 22290], Dyer in Reis et al. 2003:519 [ref. 27061], Nelson et al. 2004:98 [ref. 27807], Scharpf 2007:8 [ref. 30398], Page et al. 2013:100 [ref. 32708]). •Valid as Menidia melanoccus (Álvarez 1963) -- (Miller 2006:199 [ref. 28615]). Current status: Valid as Chirostoma melanoccus Álvarez 1963. Atherinopsidae: Menidiinae. Distribution: Mexico. Habitat: freshwater.