diamantinensis, Gymnotus Campos-da-Paz [R.] 2002:187, Figs. 1-3 [Ichthyological Exploration of Freshwaters v. 13 (no. 2); ref. 26073] Creek (riacho 1) tributary of rio Preto, upper rio Arinos at rio Tapajós syste, road to São Francisco, Diamantino municipality, about 14°20'S, 56°30'W, Mato Grosso, Brazil. Holotype: MZUSP 57505. Paratypes: MZUSP 45320 (1 c&s). Plus non-type material. Type catalog: Ferraris et al. 2017:[18] [ref. 35236]. •Valid as Gymnotus diamantinensis Campos-da-Paz 2002 -- (Ferraris et al. 2017:[18] [ref. 35236], Craig et al. 2019:45 [ref. 37060] in subgenus Gymnotus). Current status: Valid as Gymnotus diamantinensis Campos-da-Paz 2002. Gymnotidae: Gymnotinae. Distribution: Tapajós River basin, Mato Grosso, Brazil. Habitat: freshwater.