parkeri, Silurus Traill [T. S.] 1832:380, Pl. 6 (fig. 1) [Memoirs of the Wernerian Natural History Society, Edinburgh v. 6 (art. 14); ref. 17927] Guiana [as British Guiana]. Holotype (unique): whereabouts unknown. Type catalog: Ferraris 2007:36 [ref. 29155]. •Valid as Arius parkeri (Traill 1832) -- (Burgess 1989:169 [ref. 12860], Cervigón 1991:137 [ref. 24472], Cervigón 1992:257 [ref. 23827], Le Bail et al. 2000:18 [ref. 24549], Camargo & Isaac 2001:145 [ref. 27639], Acero P. 2003:842 [ref. 26998]). •Valid as Hexanematichthys parkeri (Traill 1832) -- (Marceniuk & Ferraris in Reis et al. 2003:451 [ref. 27061], Marceniuk & Menezes in Menezes et al. 2003:42 [ref. 27192]). •Valid as Aspistor parkeri (Traill 1832) -- (Marceniuk 2005:96 [ref. 28718], Marceniuk & Menezes 2007:24 [ref. 29031], Ferraris 2007:36 [ref. 29155]). •Valid as Sciades parkeri (Traill 1832) -- (Kailola 2004:143 [ref. 28108], Betancur-R. et al. 2007:347 [ref. 29268], Betancur-R. et al. 2008:827 [ref. 29950], Marceniuk et al. 2012:668 [ref. 32225] with authors as Müller & Troschel 1849, Marceniuk et al. 2017:39 [ref. 35324], Marceniuk in Marceniuk et al. 2021:172 [ref. 38945], Marceniuk et al. 2023:21 [ref. 40422]). Current status: Valid as Sciades parkeri (Traill 1832). Ariidae: Ariinae. Distribution: Western Atlantic: Atlantic draining Coastal rivers from Guyana to northern Brazil: Brazil, French Guiana, Guyana, Suriname, and Venezuela. Habitat: freshwater, brackish, marine.