orstedii, Tetragonopterus Lütken [C. F.] (ex Krøyer) 1875:229 [40] [Videnskabelige Meddelelser fra den Naturhistoriske Forening i Kjøbenhavn, Aaret 1874 (nos 12-16); ref. 17563] Río San Juan, Nicaragua. Lectotype: ZMUC 948. Paralectotypes: ZMUC 947 (1), 955-956 (2); ZMB 9197 (2). Type catalog: Nielsen 1974:47 [ref. 9588]. On p. 40 of separate. Specific name spelled Örstedii originally; not German so orstedii is correct. Lectotype selected by Schmitter-Soto 2017:1400 [ref. 35414]? •Synonym of Astyanax aeneus (Günther 1860) -- (Bussing 1998:83 [ref. 24179]). •Synonym of Astyanax fasciatus (Cuvier 1819) -- (Buckup in Reis et al. 2003:109 [ref. 27061] as orstedii with question, Mirande & Koerber 2015:2 [ref. 33698]). •Valid as Astyanax orstedii (Lütken 1875) -- (Schmitter-Soto 2017:1398 [ref. 35414] with authorship of Krøyer, Angulo et al. 2018:[18] [ref. 35879] with authorship of Krøyer, Angulo et al. 2020:5 [ref. 37425], Angulo et al. 2023:24 [ref. 40676]). Current status: Valid as Astyanax orstedii (Lütken 1875). Acestrorhamphidae: Acestrorhamphinae. Distribution: Central America: Río San Juan, Nicaragua, through both versants of Costa Rica, to Río Chiriquí basin, Panama. Habitat: freshwater.