Cyphocharax nagelii (Steindachner, 1881)

Ota, Renata Rúbia, Deprá, Gabriel de Carvalho, Graça, Weferson Júnio da & Pavanelli, Carla Simone, 2018, Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated, Neotropical Ichthyology 16 (2), pp. 1-111 : 44

Cyphocharax nagelii (Steindachner, 1881)

Fig. 12

Body elongated; greatest body depth contained 3.0 to 3.4 and caudal peduncle depth 7.7 to 8.3 times in SL; head length 3.3 to 3.7, predorsal distance 2.0 to 2.2 and caudal peduncle length 10.3 to 10.7 in SL; snout length 3.1 to 3.4, horizontal orbital diameter 3.3 to 4.0 and least interorbital width 2.6 to 2.8 in HL. Mouth terminal; premaxilla, dentary and maxilla without teeth in adults. Lateral line with 39-45 pored scales; transverse series above lateral line with 7½-9 scale rows and below with 6½-7½ scale rows. Dorsal fin with 11 or 12, pectoral fin with 13-15, pelvic fin with 9 or 10, anal fin with 8 or 9 and caudal fin with 19 rays ( Vari, 1992). Ground color silvery; dark-brown inconspicuous longitudinal band along lateral line to distal margin of median caudal-fin rays, larger on caudal peduncle. Hyaline fins ( Graça, Pavanelli, 2007).

Maximum standard length. 165.0 mm ( Graça, Pavanelli, 2007).

Distribution. Upper rio Paraná basin.

Figures

Fig. 12. a. Characidium gomesi, NUP 17607, 59.3 mm SL, córrego São Lucas, tributary of the rio Amambaí, Juti, State of Mato Grosso do Sul. b. Characidium aff. zebra, 56.0 mm SL, uncat. c. Characidium sp., NUP 3450, 27.4 mm SL, lagoa da Esperança, Nova Alvorada do Sul, State of Mato Grosso do Sul. d. Cyphocharax modestus, NUP 3290, 80.0 mm SL, lagoa do Bilunga, Taquarussu, State of Mato Grosso do Sul. e. Cyphocharax nagelii, 130.0 mm SL, uncat. f. Steindachnerina brevipinna, 105.8 mm SL, fresh specimen, uncat. g. Steindachnerina insculpta, NUP 1424, 90.0 mm SL, Itaipu Reservoir, Guaíra, State of Paraná. h. Rhaphiodon vulpinus, 480.0 mm SL, fresh specimen, uncat.