Galeocharax gulo (Cope, 1870)

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 : 35

Galeocharax gulo (Cope, 1870)

Fig. 9

Body deep; greatest depth contained 3.0 to 3.7 and caudal peduncle depth 11.5 to 13.9 times in SL; head length 3.0 to 3.5, predorsal distance 1.8 to 2.2 and caudal peduncle length 9.4 to 11.3 in SL; snout length 8 to 9.3, horizontal orbital diameter 3.9 to 4.6 and least interorbital width 3.6 to 4.8 in HL. Mouth slightly subterminal; premaxilla with 6-10 teeth, inner dentary row with 7-11, outer with 4 large plus 33-35 small and maxilla with 36-51 teeth. Lateral line complete, with 81-86 pored scales; transverse series above lateral line with 16-18 scale rows and below with 15-17 scale rows. Dorsal fin with 11 or 12, pectoral fin with 15 or 16, pelvic fin with 8, anal fin with 43-50, and caudal fin with 19 rays. Ground color silvery to yellowish; silvery longitudinal band on flank (brown or grey in preserved specimens), from humeral spot to caudal peduncle; black oval, vertically elongated, humeral spot. Hyaline fins ( Graça, Pavanelli, 2007).

Maximum standard length. 257.0 mm ( Graça, Pavanelli, 2007).

Distribution. Río Orinoco, rio Oyapok, rio Araguaia- Tocantins, upper rio Paraná and Amazon (except the rio Negro and rio Xingu) basins ( Giovannetti et al., 2017).

Remarks. Galeocharax gulo was identified as G. knerii by Graça, Pavanelli (2007). Giovannetti et al. (2017), in a revisionary study of Galeocharax Fowler, 1910 , proposed the new synonym.

Figures

Fig. 9. a. Oligosarcus paranensis, NUP 303, 82.0 mm SL, Fiú Reservoir (rio Apucaraninha), Tamarana, State of Paraná. b. Oligosarcus pintoi, NUP 1772, 68.4 mm SL, rio Piquiri, Mariluz, State of Paraná. c. Psellogrammus kennedyi, 30.5 mm SL, fresh specimen, uncat. d. Aphyocharax anisitsi, 38.6 mm SL, fresh specimen, uncat. e. Aphyocharax dentatus, 48.0 mm SL, fresh specimen, uncat. f. Aphyocharax sp., NUP 3225, 33.4 mm SL, lagoa do Bilunga, Taquarussu, State of Mato Grosso do Sul. g. Galeocharax gulo, NUP 263, 200.0 mm SL, rio Paraná, Porto Rico, State of Paraná. h. Roeboides descalvadensis, NUP 3286, 88.8 mm SL, lagoa do Bilunga, Taquarussu, State of Mato Grosso do Sul.