Schizodon altoparanae Garavello, Britski, 1990

Fig. 5

Body elongated; greatest depth contained 3.6 to 3.8, caudal peduncle depth 9.0 times in SL; head length 4.0 to 4.5, predorsal distance 2.0 to 2.5, caudal peduncle length 7.7 to 8.0 in SL; snout length 2.0 to 2.5, horizontal orbital diameter 2.0 to 2.5, least interorbital width 2.0 to 2.5 and dentary width 5.0 to 5.5 in HL. Mouth terminal; premaxilla and dentary with 4 teeth, no maxillary teeth. Lateral line with 42 or 43 pored scales; transverse series above lateral line with 5 scale rows and below with 4 or 4½ scale rows. Dorsal fin with 14 or 15, pectoral fin with 13-17, pelvic fin with 9, anal fin with 12 or 13 and caudal fin with 19 rays (Garavello, Britski, 1990). Ground color silvery to yellowish; black oval, horizontally elongated, blotch on posterior half of caudal peduncle and caudal-fin base, extending to median caudal-fin rays. Hyaline fins (Graça, Pavanelli, 2007).

Maximum standard length. 300.0 mm (Graça, Pavanelli, 2007).

Distribution. Upper rio Paraná basin.