Leporellus vittatus

Leporellus vittatus (Valenciennes, 1850)

Fig. 3

Description. Body elongated; greatest depth contained 3.7 to 4.5, and caudal peduncle depth 10.3 to 10.7 times in SL; head length 3.8 to 4.2, predorsal distance 2.2 to 2.4, caudal peduncle length 5.2 to 5.5 in SL; snout length 2.2 to 2.6, horizontal orbital diameter 3.8 to 5.7 and least interorbital width 2.5 to 2.7. Mouth terminal; premaxilla and dentary with 4 teeth, no maxillary teeth. Lateral line with 41-43 pored scales; transverse series above lateral line with 5½ scale rows and below with 4 scale rows. Dorsal fin with 10 or 11, pectoral fin with 14-16, pelvic fin with 9 or 10, anal fin with 10 and caudal fin with 19 rays. Ground color silvery to yellowish; dark-brown spots on dorsal and lateral portion of head; several longitudinal series of dark-brown spots on flank scales; dark-brown longitudinal band along lateral line, extending to median caudal-fin rays. Yellowish fins; black blotch on dorsal fin and two black oblique stripes on each caudal-fin lobe (Graça, Pavanelli, 2007).

Maximum standard length. 220.0 mm SL (Graça, Pavanelli, 2007).

Distribution. Amazon, Paraná-Paraguay system and rio São Francisco basin.