Steindachnerina insculpta (Fernández-Yépez, 1948)

Fig. 12

Body elongated; greatest body depth contained 2.9 to 3.4 and caudal peduncle depth 7.7 to 9.1 times in SL; head length 3.2 to 3.7, predorsal distance 2.0 to 2.2 and caudal peduncle length 9.1 to 9.7 in SL; snout length 3.0 to 3.4, horizontal orbital diameter 3.0 to 3.4 and least interorbital width 2.4 to 2.6 in HL. Mouth terminal; premaxilla, dentary and maxilla without teeth in adults. Lateral line with 34-40 pored scales; transverse series above lateral line with 6½- 7½ scale rows and below with 4½-5½ scale rows. Dorsal fin with 11, pectoral fin with 12-15, pelvic fin with 9, anal fin with 9 or 10 and caudal fin with 19 rays (Vari, 1991). Ground color silvery; black conspicuous longitudinal stripe along lateral line to distal margin of median caudal-fin rays, larger on caudal peduncle. Yellowish fins; dorsal fin with few scattered black chromatophores (Graça, Pavanelli, 2007).

Maximum standard length. 144.0 mm (Graça, Pavanelli, 2007).

Distribution. Upper rio Paraná basin.