koerberi, Characidium Méttola [V. E.], Terán [G. E.], Serra [W. S.], Aguilera [G.], Montes [M. M.], Benítez [M. F.], Alonso [F.], Ruíz Díaz [F.] & Mirande [J. M.] 2026:288, Figs. 1-5 [Acta Zoológica Lilloana v. 70 (no. 1); ref. 43198] Tabay stream, middle Paraná River basin, Misiones, Argentina, 26°59'58.5"S, 55°10'41.1"W. Holotype: CI-FML 8298. Paratypes: CFA-IC, CI-FML, IBIGEO, LGEP, MHNM. •Valid as Characidium koerberi Méttola, Terán, Serra, Aguilera, Montes, Benítez, Alonso, Ruíz Díaz & Mirande 2026. Current status: Valid as Characidium koerberi Méttola, Terán, Serra, Aguilera, Montes, Benítez, Alonso, et al. 2026. Crenuchidae: Characidiinae. Distribution: South America: middle and lower Paraná River basin, Corrientes and Misiones Provinces, Argentina. Habitat: freshwater.