Fig. 6. a in Cryptic species of the genus Pimelodella (Siluriformes: Heptapteridae) from the Miranda River, Paraguay River basin, Pantanal of Mato Grosso do Sul, Central Brazil

Fig. 6. a to c) Pimelodella 2n = 52, from the Miranda River basin, Passo do Lontra, MS: a) dorsal filament and upper lobe of caudal fin elongated (male, 123.6 mm SL), b) dorsal fin filament slightly elongated and upper lobe of caudal fin elongated (male, 106.8 mm SL), c) filament on dorsal fin absent and upper lobe of caudal fin not elongated (male, 117.6 mm SL). d to f) Pimelodella 2n = 46 from the Miranda River basin, Passo do Lontra, MS: d) filament on dorsal fin elongated and upper lobe of caudal fin slightly elongated (male, 82.7 mm SL), e) Filament on the dorsal fin slightly elongated and upper lobe of caudal fin not elongated (female, 93.2 mm SL), f) Filament on the dorsal fin absent and upper lobe of caudal fin elongated (female, 85.1 mm SL).