archaeus, Gastropterus Cope [E. D.] 1878:700 [Proceedings of the American Philosophical Society v. 17 (no. 101); ref. 945] Arequipa, Pacific slope, Peru, elevation 7500 feet. Syntypes: ANSP 22002-03 (2). Type catalog: Böhlke 1984:23 [ref. 13621]. •Valid as Basilichthys archaeus (Cope 1878) -- (Ortega & Vari 1986:18 [ref. 9708], Dyer 1997:50 [ref. 23262], Dyer 1998:536 [ref. 23858], Dyer & Gosztonyi 1999:215 [ref. 24265], Dyer 2000:105 [ref. 26677], Dyer in Reis et al. 2003:517 [ref. 27061], Reis et al. 2016:17 [ref. 34496]). Current status: Valid as Basilichthys archaeus (Cope 1878). Atherinopsidae: Atherinopsinae. Distribution: Pacific versant of Peruvian Andes, Peru. Habitat: freshwater.