Systematics of the family Ariidae (Ostariophysi, Siluriformes), with a redefinition of the genera. Author Alexandre P. Marceniuk Author Naércio A. Menezes text Zootaxa 2007 1416 1 126 http://www.zoobank.org/urn:lsid:zoobank.org:pub:FFC65592-D8DB-41BE-AEAC-A41EAB6C6185 journal article z01416p001 Arius gagora (Hamilton, 1822) Pimelodus gagora Hamilton, 1822: 167, 376, pl. 10 (fig. 54). Type locality: Bengal estuaries. No types known. Arius macracanthus Guenther , 1864: 167. Type locality: Thailand . Holotype : BMNH 1862.11.222. Distribution: South and southeast Asia. Countries: India, Bangladesh, Myanmar and Thailand. Habitat: Brackish and freshwaters. Maximum size: 1.000 mm TL. Material examined: UMMZ 187892 (4 al, 147-175 mm TL) (1 c&s), Bangladesh , Comilla , Meghna River , Chandpu .