Schizodon borellii (Boulenger, 1900)

Fig. 5

Body elongated; greatest depth contained 3.0 to 5.0, caudal peduncle depth 9.7 to 10.0 times in SL; head length 3.6 to 4.6, predorsal distance 2.1 to 2.5, caudal peduncle length 8.2 to 9.7 in SL; snout length 2.3 to 2.4, horizontal orbital diameter 3.6 to 5.0, least interorbital width 1.8 to 2.0 and dentary width 4.0 to 4.7 in HL. Mouth terminal; premaxilla and dentary with 4 teeth, no maxillary teeth. Lateral line with 40-42 pored scales; transverse series above and below lateral line with 4½ scale rows. Dorsal and pectoral fin with 14 or 15, pelvic fin with 9, anal fin with 10 and caudal fin with 19 rays (Britski et al., 2007). Ground color silvery; four black transverse bars on flank. Hyaline fins, except caudal fin, with distal margins black (Graça, Pavanelli, 2007).

Maximum standard length. 315.0 mm (Graça, Pavanelli, 2007).

Distribution. Paraná-Paraguay system.

Remarks. Schizodon borellii is a non-native species from the upper rio Paraná and its occurrence can be associated with the releasing of specimens in several reservoirs in the region for restocking (CESP, 1996; Júlio Júnior et al., 2009).