jivaro, Characidium Zanata [A. M.], Britzke [R.], Meza-Vargas [V.], Hidalgo [M. H.], Faustino-Fuster [D.] & Oliveira-Silva [L.] 2025:3, Figs. 1-3 [Neotropical Ichthyology v. 23 (no. 3): e250047; ref. 42522] Uchpayacu creek, tributary of río Morona, río Marañón subbasin, río Amazonas basin, Morona District, Datem del Marañón Province, Loreto Department, Peru, 03°27'4.13"S, 77°22'44.04"W. Holotype: MUSM 74688. Paratypes: CIIAP, MUSM, MZUSP, UFBA. •Valid as Characidium jivaro Zanata, Britzke, Meza-Vargas, Hidalgo, Faustino-Fuster & Oliveira-Silva 2025. Current status: Valid as Characidium jivaro Zanata, Britzke, Meza-Vargas, Hidalgo, Faustino-Fuster & Oliveira-Silva 2025. Crenuchidae: Characidiinae. Distribution: South America: Marañón River drainage, western Amazon River basin, Loreto Department, Peru. Habitat: freshwater.