pirahan, Moenkhausia Mathubara [K.] & Toledo-Piza [M.] 2020:25, Figs. 4B, 7C, 13-16 [Zootaxa 4852 (no. 1); ref. 37778] Igarapé Traíra, Transamazônica highway, 40 km from the ferryboat of Humaitá to Apuí, Humaitá, Rondônia, Brazil, 7°35'31"S, 62°44'45"W. Holotype: MZUSP 125777. Paratypes: MZUSP, UFRO, ZUEC. Plus additional non-type material. •Valid as Moenkhausia pirahan Mathubara & Toledo-Piza 2020 -- (Reia et al. 2021:11 [ref. 38582]). Current status: Valid as Moenkhausia pirahan Mathubara & Toledo-Piza 2020. Characidae: Stethaprioninae. Distribution: Madeira, Trombetas and Tapajós River basins (regions Teles Pires, middle-lower Madeira, Madeira Shield tributaries, Trombetas), Brazil. Habitat: freshwater.