halecinus, Agoniates Müller [J.] & Troschel [F. H.] 1845:33, Pl. 7 (fig. 2) [Horae Ichthyologicae Nos 1 & 2; ref. 3071] Guiana. Holotype (unique): ZMB 3618. •Valid as Agoniates halecinus Müller & Troschel 1845 -- (Zarske & Géry 1997:175 [ref. 23736] with locality as probably Cuyuni river, Lima & Zanata in Reis et al. 2003:170 [ref. 27061], Dagosta & Datovo 2013:165 [ref. 32564], DoNascimiento et al. 2017:63 [ref. 35633], Silvano et al. 2020:60 [ref. 38133], Dagosta 2024:433 [ref. 40817]). Current status: Valid as Agoniates halecinus Müller & Troschel 1845. Triportheidae: Agoniatinae. Distribution: South America: Amazon and Orinoco river basins (Brazil, Colombia, Guyana and Venezuela). Habitat: freshwater.