guyanensis, Hemigrammus Géry [J.] 1959:254, Fig. 3 [Bulletin Mensuel de la Société Linnéenne de Lyon v. 28 (no. 8); ref. 10038] Sable creek, tributary to upper Mana, French Guiana. Holotype: MHNG 2181.23 [ex Géry coll. T 18-1-19]. Paratypes: (23 + 56 + 14) ANSP 94718 (4), 112219 (4), 139701 (3); MNHN 1980-1436 (3); SMF 5378-79 (2); USNM 179756 (8); ZMA 100630 (2), 113854 (2); ZSM 26750 [ex Géry coll., ex MHNG 2181.24] (1). Type catalog: Nijssen et al. 1982:19 [ref. 19236], Böhlke 1984:47 [ref. 13621], Weber 1998:7 [ref. 32707], Neumann 2011:246 [ref. 31652]. •Valid as Hemigrammus guyanensis Géry 1959 -- (Géry et al. 1991:59 [ref. 21021], Planquette et al. 1996:276 [ref. 22818], Zarske & Géry 2002:26 [ref. 26553], Lima & Oyakawa in Reis et al. 2003:131 [ref. 27061], Zarske et al. 2006:23 [ref. 28749], Carvalho et al. 2010:253 [ref. 30862], Lima et al. 2016:131 [ref. 34590], DoNascimiento et al. 2017:[8] [ref. 35679], Borstein et al. 2022:16 [ref. 39507]). Current status: Valid as Hemigrammus guyanensis Géry 1959. Characidae: Stethaprioninae. Distribution: South America: French Guiana and Suriname. Habitat: freshwater.