Serrasalmus maculatus Kner, 1858

Fig. 15

Body deep; greatest depth contained 1.6 to 1.8 and caudal peduncle depth 8.2 to 9.7 times in SL; head length 2.8 to 3.2, predorsal distance 1.6 to 1.7 and caudal peduncle length 10.5 to 11.4 in SL; snout length 3.7 to 4.6, horizontal orbital diameter 3.5 to 4.5 and least interorbital width 2.6 to 3.0 in HL. Mouth terminal, dentary prognathous; premaxilla with 6, dentary with 7, maxilla with no teeth and palate with 4-7 teeth. Lateral line with 69-75 pored scales; transverse series above lateral line with 29-33 scale rows and below with 24- 29 scale rows. Dorsal and pectoral fin with 15-17, pelvic fin with 6 or 7, anal fin with 30-33 and caudal fin with 19 rays (Jégu, Santos, 2001). Ground color silvery to yellowish; several dark-brown rounded blotches on body. Yellowish fins; unpaired fins with distal margin black, except caudal fin, with hyaline margin, preceded by black transverse bar (Graça, Pavanelli, 2007).

Maximum standard length. 268.0 mm (Graça, Pavanelli, 2007).

Distribution. Amazon and Paraná-Paraguay system.