dasycephalus, Arius Günther [A.] 1864:157, Fig. [Catalogue of the fishes in the British Museum v. 5; ref. 1974] Oahu Island, Hawaiian Islands [in error]. Holotype (unique): BMNH 1855.9.19.1100. Type catalog: Ferraris 2007:39 [ref. 29155]. See Mundy 2005:154 [ref. 28379] for comments on type locality. The original locality of Sandwich Islands is in error. •Valid as Arius dasycephalus Günther 1864 -- (Allen & Robertson 1994:67 [ref. 22193], Bussing & López S. 1994:60 [ref. 23101], Kailola & Bussing in Fischer et al. 1995:867 [ref. 22829]). •Valid as Ariopsis dasycephalus (Günther 1864) -- (Nelson et al. 2004:82 [ref. 27807]). •Valid as Cathorops dasycephalus (Günther 1864) -- (Marceniuk & Ferraris in Reis et al. 2003:449 [ref. 27061], Kailola 2004:132 [ref. 28108], Marceniuk & Menezes 2007:43 [ref. 29031], Ferraris 2007:39 [ref. 29155], Marceniuk 2007:46 [ref. 29324], Marceniuk et al. 2016:138 [ref. 34763], Jiménez-Prado et al. 2015:400 [ref. 34894]). •Valid as Cathorops (Precathorops) dasycephalus (Günther 1864) -- (Betancur-R. et al. 2007:349 [ref. 29268], Marceniuk & Betancur-R. 2008:42 [ref. 29576], Marceniuk et al. 2009:274 [ref. 30406], Marceniuk et al. 2012:641 [ref. 32225], Page et al. 2013:82 [ref. 32708], Barriga Salazar 2014:115 [ref. 35745], González-Murcia et al. 2019:291 [ref. 36544], Marceniuk et al. 2023:14 [ref. 40422] in subgenus Precathorops, Page et al. 2023:78 [ref. 40505]). Current status: Valid as Cathorops dasycephalus (Günther 1864). Ariidae: Ariinae. Distribution: South and Central America in eastern Pacific drainages: Colombia, Costa Rica, El Salvador, Ecuador and Panama. Habitat: brackish, marine.