guatemalensis, Arius Günther [A.] 1864:145 [Catalogue of the fishes in the British Museum v. 5; ref. 1974] Guatemala. Syntypes: BMNH 1853.1.11.6 (1), 1864.1.26.262 (1). Type catalog: Ferraris 2007:33 [ref. 29155]. •Valid as Arius guatemalensis Günther 1864 -- (Villa 1982:115 [ref. 36708], Allen & Robertson 1994:67 [ref. 22193], Burgess 1989:168 [ref. 12860], Bussing & López S. 1994:60 [ref. 23101], Kailola & Bussing in Fischer et al. 1995:868 [ref. 22829], De La Cruz Agüero et al. 1997:56 [ref. 24545] as guatermalensis, Bussing 1998:138 [ref. 24179], Miller 2006:168 [ref. 28615]). •Valid as Hexanematichthys guatemalensis (Günther 1864) -- (Marceniuk & Ferraris in Reis et al. 2003:451 [ref. 27061]). •Valid as Sciades guatemalensis (Günther 1864) -- (Marceniuk & Menezes 2007:107 [ref. 29031], Matamoros et al. 2009:10 [ref. 31241], Romero-Berny et al. 2018:89 [ref. 35859]). •Valid as Ariopsis guatemalensis (Günther 1864) -- (Castro-Aguirre et al. 1999:154 [ref. 24550], Nelson et al. 2004:82 [ref. 27807], Kailola 2004:126 [ref. 28108], Love et al. 2005:27 [ref. 37547], Ferraris 2007:33 [ref. 29155], Betancur-R. et al. 2007:348 [ref. 29268], McMahan et al. 2013:444 [ref. 32422], Page et al. 2013:82 [ref. 32708], Marceniuk et al. 2017:22 [ref. 35431], González-Murcia et al. 2019:291 [ref. 36544], Love et al. 2021:45 [ref. 39279], Angulo et al. 2023:28 [ref. 40676], Barrientos et al. 2023:272 [ref. 41235], Marceniuk et al. 2023:19 [ref. 40422], Page et al. 2023:78 [ref. 40505]). Current status: Valid as Ariopsis guatemalensis (Günther 1864). Ariidae: Ariinae. Distribution: Eastern Pacific: Baja California Sur (Mexico) south to Costa Rica, including Gulf of California (Mexico). Habitat: brackish, marine.