motius, Clupanodon Hamilton [F.] 1822:251, 383 [An account of the fishes found in the river Ganges; ref. 2031] Brahmaputra River, India. Neotype: CAS-SU 35625. Hamilton's unpublished figure reproduced in Gray 1834, v. 2, Pl. 91 (figs. 3-4); also reproduced by Britz 2019:Pl. 141 [ref. 37532]. Neotype designated by Hata et al. 2026:11 [ref. 43295]. •Questionably the same as Ilisha megaloptera (Swainson 1838) -- (Whitehead 1985:270 [ref. 5141], Talwar & Jhingran 1991:120 [ref. 20764], Kottelat 2013:50 [ref. 32989]). •Valid as Clupanodon motius Hamilton 1822 -- (Ataur Rahman 1989:253 [ref. 24860]). •Synonym of Ilisha megaloptera (Swainson 1839) -- (Munroe et al. 1999:1764 [ref. 24728], Ataur Rahman 2003:277 [ref. 31338]). •Valid as Ilishan motius (Hamilton 1822) -- (Hata et al. 2026:2 [ref. 43295]). Current status: Valid as Ilisha motius (Hamilton 1822). Pristigasteridae. Distribution: South Asia: Ganges Basin including Brahmaputra River; Odisha and Assam (Bangladesh, India). IUCN (2026): Not Assessed. Habitat: freshwater.