obscurus, Gymnotus Crampton [W. G. R.], Thorsen [D. H.] & Albert [J. S.] 2005:91, Figs. 3, 7 [Copeia 2005 (no. 1); ref. 28092] Cano do Lago Mamirauá at Comunidade Boca do Mamirauá, 3°06'37"S, 64°47'49"W, Mamirauá Reserve, Amazonas, Brazil. Holotype: MZUSP 60604. Paratypes: BMNH1998.3.12.19-21 (1, 1, 1); IDSM 432 (1); INPA 18388 (2); MZUSP 60605-06 (1, 1) 75152-57 (1, 1, 1, 1, 1, 1); UF 118836-37 (1, 1). Type catalog: Ferraris et al. 2017:[19] [ref. 35236]. •Valid as Gymnotus obscurus Crampton, Thorsen & Albert 2005 -- (Milhomem et al. 2012:804 [ref. 31815], Ferraris et al. 2017:[19] [ref. 35236], Craig et al. 2019:51 [ref. 37060] in subgenus Gymnotus). Current status: Valid as Gymnotus obscurus Crampton, Thorsen & Albert 2005. Gymnotidae: Gymnotinae. Distribution: Mamirauá Reserve near Tefé, Amazonas, Brazil. Habitat: freshwater.