macracanthus, Arius Günther [A.] 1864:167, Fig. [Catalogue of the fishes in the British Museum v. 5; ref. 1974] Thailand. Holotype (unique): BMNH 1862.11.1.222. Type catalog: Ferraris 2007:36 [ref. 29155]. See Kailola 1999:1848 [ref. 24732]. •Valid as Arius macracanthus Günther 1864 -- (Burgess 1989:169 [ref. 12860], Kailola 2004:127 [ref. 28108] with question). •Species inquirenda in Arius -- (Ferraris 2007:36 [ref. 29155]). •Synonymy of Arius gagora (Hamilton 1822) -- (Kottelat 2013:246 [ref. 32989] with question). Current status: Synonym of Arius gagora (Hamilton 1822). Ariidae: Ariinae. Habitat: freshwater, brackish, marine.