chimarrao, Gymnotus Cognato [D.], Richer-de-Forges [M. M.], Albert [J. S.] & Crampton [W. G. R.] 2008:377, Figs. 2-5 [Ichthyological Exploration of Freshwaters v. 18 (no. 4) [for 2007]; ref. 29363] Arroio do Meio, Arroio Grande, Rio Taquari drainage, 29°21'09"S, 51°57'28"W, Rio Grande do Sul state, Brazil, elevation 54 meters. Holotype: UFRGS 6774. Paratypes: UFRGS 6770 (1), 6771 (1), 6772 (1), 6773 (1), 6775 (1, c&s), 6776 (1). Type catalog: Ferraris et al. 2017:[17] [ref. 35236]. •Valid as Gymnotus chimarrao Cognato, Richer-de-Forges, Albert & Crampton 2008 -- (Richer-de-Forges et al. 2009:543 [ref. 30384], Milhomem et al. 2012:804 [ref. 31815], Bertaco et al. 2016:422 [ref. 34561], Ferraris et al. 2017:[17] [ref. 35236], Craig et al. 2018:60 [ref. 35800], Craig et al. 2019:39 [ref. 37060] in subgenus Gymnotus). Current status: Valid as Gymnotus chimarrao Cognato, Richer-de-Forges, Albert & Crampton 2008. Gymnotidae: Gymnotinae. Distribution: Taquari River drainage, Rio Grande do Sul, Brazil. Habitat: freshwater.