otrynus, Hyphessobrycon Benine [R. C.] & Lopes [G. A. M.] 2008:62, Figs. 1-4 [Zootaxa No. 1747; ref. 29589] Río Portuguesa drainage, río las Marias, at Quebrada Seca, about 45 min upstream by car from Highway 5, 22 kilometers north-north west of Guanare, Portuguesa, Venezuela. Holotype: USNM 349418. Paratypes: LIRP 6040 (10, 2 c&s), USNM 392814 (1). •Valid as Hyphessobrycon otrynus Benine & Lopes 2008 -- (Carvalho & Langeani 2013:526 [ref. 32913], Dagosta et al. 2014:366 [ref. 33382], García-Alzate et al. 2017:125 [ref. 35253], DoNascimiento et al. 2017:50 [ref. 35633], Urbano-Bonilla et al. 2018:86 [ref. 35773], Lima et al. 2022:262 [ref. 39116], Cortés Hernández et al. 2023:455 [ref. 40760]). Current status: Valid as Hyphessobrycon otrynus Benine & Lopes 2008. Acestrorhamphidae: Hyphessobryconinae. Distribution: South America: Orinoco River basin (Venezuela and Colombia). Habitat: freshwater.