gracilis, Cheirodon Géry [J.] 1960:29, Pl. 2 (fig. 4); Figs. 12-13 [Senckenbergiana Biologica v. 41 (no. 1/2); ref. 1605] Sable Creek, Upper Mana, French Guiana. Holotype: SMF 4785. Paratypes: ANSP 139705 (1); Géry coll. 57 che 02-32-9 to 11 (3), 57 Che 02-19-2 to 8 (?); SMF 4791 (2); ZMA 113856. Type catalog: Nijssen et al. 1982:16 [ref. 19236], Böhlke 1984:47 [ref. 13621]. •Valid as Odontostilbe gracilis (Géry 1960) -- (Casciotta et al. 1992:8 [ref. 21059], Planquette et al. 1996:330 [ref. 22818], Keith et al. 2000:13 [ref. 24547], Malabarba in Reis et al. 2003:218 [ref. 27061], Melo et al. 2016:133 [ref. 34701]). •Not in Odontostilbe -- (Bührnheim & Malabarba 2006:193 [ref. 28728]). •Valid as Serrapinnus gracilis (Gáry 1960) -- (Zarske 2012:16 [ref. 31902], Jerep et al. 2016:296 [ref. 34362], Taphorn et al. 2022:19 [ref. 41297]). Current status: Valid as Serrapinnus gracilis (Géry 1960). Characidae: Cheirodontinae. Distribution: South America: French Guiana and Brazil. Habitat: freshwater.