Fig. 11

Body deep; greatest body depth contained 2.7 to 2.9 and caudal peduncle depth 8.4 to 9.7 times in SL; head length 4.5 to 4.7, predorsal distance 1.7 to 1.9, and caudal peduncle length 7.6 to 8.1; snout length 3.7 to 3.9, horizontal orbital diameter 2.4 to 2.6 and interorbital distance 3.0 to 3.2 in HL. Mouth subterminal; inner row of premaxilla with 4, outer row with 4 or 5, dentary with 9-11, and maxilla with 3 or 4 teeth. Lateral line with 34-36 pored scales; transverse series above lateral line with 5 or 5½ rows and below with 4-5½ scale rows. Dorsal fin with 12 or 13, pectoral fin with 15, pelvic fin with 9, anal fin rays 22-24, and caudal with 19 rays. Ground color silvery to yellowish; black rounded or vertically elongated humeral spot; silvery longitudinal band (brown or grey in fixed specimens), from humeral spot to median caudal-fin rays. Yellowish or reddish fins (Graça, Pavanelli, 2007).

Maximum standard length. 60.0 mm (Graça, Pavanelli, 2007).

Distribution. Rio Paraná and rio Uruguay basins, and Laguna dos Patos drainage.