guatemalensis, Atherinichthys Günther [A.] 1864:151 [Proceedings of the Zoological Society of London 1864 (pt 1) (art. 3) (for 22 Mar. 1864); ref. 13930] Lakes of Huamuchal, Retalhuleu, Guatemala. Syntypes: BMNH 1864.1.26.367 (5). •Valid as Melaniris guatemalensis (Günther 1864) -- (Villa 1982:139 [ref. 36708], Bussing 1987:158 [ref. 22927]). •Valid as Atherinella guatemalensis (Günther 1864) -- (Chernoff 1986:136 [ref. 5848], Chernoff 1986:243 [ref. 5847], Espinosa Pérez et al. 1993:58 [ref. 22290], Lavenberg & Chernoff in Fischer et al. 1995:895 [ref. 22829], De La Cruz Agüero et al. 1997:60 [ref. 24545], Bussing 1998:238 [ref. 24179], Castro-Aguirre et al. 1999:194 [ref. 24550], Dyer in Reis et al. 2003:516 [ref. 27061], Nelson et al. 2004:97 [ref. 27807], Miller 2006:189 [ref. 28615], Scharpf 2007:6 [ref. 30398], McMahan et al. 2013:446 [ref. 32422], Page et al. 2013:99 [ref. 32708], Romero-Berny et al. 2018:89 [ref. 35859], Barraza et al. 2022:209 [ref. 40101], Angulo et al. 2023:57 [ref. 40676]). Current status: Valid as Atherinella guatemalensis (Günther 1864). Atherinopsidae: Menidiinae. Distribution: Southern North America, central America: Pacific Slope of Mexico, Guatemala and El Salvador. Habitat: freshwater, brackish, marine.