fluviatilis, Achirus Meek [S. E.] & Hildebrand [S. F.] 1928:1002, Pl. 102 (fig. 2) [Field Museum of Natural History, Publications, Zoölogical Series v. 15 (publ. 249); ref. 2964] Río Juan Díaz, Panama. Holotype: USNM 81667. Paratypes and non-types: FMNH 18204-09 (0, 1, 1, 1, 1, 1), 18210-44 (total 45); USNM 81668 (now 18), 85768 (10, not found in 1980), 165536 (6); MNHN 1976-0405 [ex FMNH 18204] (1), ZIN 55534 (1, ex USNM 81668). Type catalog: Ibarra & Stewart 1987:5 [ref. 12367], Desoutter et al. 2001:316 [ref. 25922], Voronina & Volkova 2019:269 [ref. 37075]. •Valid as Achirus fluviatilis Meek & Hildebrand 1928 -- (Ortega & Vari 1986:21 [ref. 9708]). •Valid as Trinectes fluviatilis (Meek & Hildebrand 1928) -- (Krupp in Fischer et al. 1995:849 [ref. 22829], Chirichigno F. & Vélez D. 1998:215 [ref. 24555], Walker & Bollinger 2001:182 [ref. 25782], Ramos in Reis et al. 2003:668 [ref. 27061], Duplain 2009:40 [ref. 40454], Duplain et al. 2012:541 [ref. 32201], Barriga Salazar 2014:119 [ref. 35745], Jiménez-Prado et al. 2015:392 [ref. 34894], Angulo 2021:10 [ref. 38913], Siccha-Ramirez et al. 2023:249 [ref. 40816], Valenzuela et al. 2023:95 [ref. 40815]). Current status: Valid as Trinectes fluviatilis (Meek & Hildebrand 1928). Achiridae. Distribution: Eastern Pacific: Costa Rica south to northern Peru. IUCN (2022): Least Concern. Habitat: freshwater, brackish, marine.