rodwayi, Hemigrammus Durbin [M. L.] 1909:58 [Annals of the Carnegie Museum v. 6 (no. 1); ref. 1166] Georgetown Trenches, Botanic garden, Aruka and Barima rivers, Guyana. Holotype: FMNH 53026 [ex CM 1450]. Paratypes: (306) BMNH 1911.10.31.388-392 (5), 1917.11.2.3 (1); CAS 60472 [ex IU 11906] (28), 60473 [ex IU 11907] (17), 60474 [ex IU 11908] (2), 60475 [ex IU 11909] (5); FMNH (248, 8 lots); CAS-SU 21915 (5); MCZ 29977 [ex CM/IU] (5); UMMZ 185268 (8); USNM 66188 [ex CM] (5); ZMA 100987 (3). Type catalog: Henn 1928:65 [ref. 12305], Böhlke 1953:24 [ref. 12291], Nijssen et al. 1982:19 [ref. 19236], Ibarra & Stewart 1987:45 [ref. 12367], Vari & Howe 1991:25 [ref. 19022]. •Valid as Hemigrammus rodwayi Durbin 1909 -- (Ortega & Vari 1986:8 [ref. 9708], Géry et al. 1991:59 [ref. 21021], Taphorn 1992:230 [ref. 23654], Planquette et al. 1996:280 [ref. 22818], Lima & Oyakawa in Reis et al. 2003:133 [ref. 27061], Zarske et al. 2006:23 [ref. 28749], Marinho et al. 2008:59 [ref. 29547], Carvalho et al. 2010:253 [ref. 30862], Zarske 2011:10 [ref. 31376], Melo et al. 2016:132 [ref. 34701], Melo et al. 2016:375 [ref. 35317], Costa et al. 2017:44 [ref. 35684], Faria et al. 2018:8 [ref. 35883], Albornoz-Garzón et al. 2019:938 [ref. 36872], Meza-Vargas et al. 2021:18 [ref. 39298], Koerber et al. 2022:33 [ref. 39235], Taphorn et al. 2022:15 [ref. 41297], Vieira et al. 2023:17 [ref. 40759] as cf. rodwayi). Current status: Valid as Hemigrammus rodwayi Durbin 1909. Acestrorhamphidae: Pristellinae. Distribution: South America: coastal rivers (Guyana, Suriname, French Guiana), and Amazon River basin (Brazil and Peru). Habitat: freshwater.