Gymnotus inaequilabiatus ( Valenciennes, 1839 )

Batista-Silva, Valéria Flávia, Frota, Augusto, Kashiwaqui, Elaine Antoniassi Luiz, Abelha, Milza Celi Fedatto, Bailly, Dayani, Gubiani, Éder André & Júnio da Graça, Weferson, 2018, Ichthyofauna from three streams of the lower Iguatemi River in the upper Paraná river basin, Brazil, Check List 14 (2), pp. 363-378 : 372

Gymnotus inaequilabiatus ( Valenciennes, 1839)

Carapos inaequilabiatus Valenciennes (1839) : 14 [original description].

Gymnotus inaequilabiatus — Graça and Pavanelli 2007: 178, 179; Bifi et al. 2017: 4, 6, fig. 2.26.

Material examined. Table 2; Figure 5W.

Elongated and compressed body; superior mouth, dentary prognathous; one or two conical teeth on the premaxilla and dentary. Transversal series above lateral line with 6–8 scale rows. Pectoral fin with 13–16 and anal fin with 170–260, total rays. Ground color pale brown; body with light transversal bars alternating with dark brown transversal bars, visible in specimens with less than 250 mm total length (TL); in larger specimens stripes can be broken or disappear, resulting in color pattern with darkbrown rounded or irregular blotches, especially on dorsal region of body; dark-brown bars wider than light bars. Hyaline fins, with scattered dark-brown spots. Body with 21 or 22 pairs of obliquely dark bands from the tail tip to nape. Pectoral and anal fins are uniformly dark gray, and the posterior part of the anal fin is pale.

Gymnotus pantanal Fernandes, Albert, Daniel-Silva,

Lopes, Crampton & Almeida-Toledo, 2005

Gymnotus pantanal Fernandes et al. 2005: 4 , Fig. 1 [original description]— Graça and Pavanelli 2007: 178, 180.

Material examined. Table 2

Elongated and subcilindrical body; superior mouth, dentary prognathous. Pectoral fin with 16–18 and anal fin with 256–270, total rays; transversal series above lateral line with 7 or 8 scale rows ( Fernandes et al. 2005). Ground color brown; body with seven to 25 light transversal stripes, spaced apart; hyaline fins or light, with scattered dark brown spots.