Zungaro jahu (Ihering, 1898)

Fig. 30

Body deep; greatest depth contained 3.5 to 3.8 times in SL; head length 2.9 to 3.1, anal-fin base length 9.0 to 9.3, adipose-fin base length 5.9 to 6.2 and maxillary-barbel length 1.9 to 2.2 in SL; snout length 2.6 to 2.8, horizontal orbital diameter 9.9 to 11.0 and least interobital width 2.7 to 3.1 in HL. Mouth terminal, tooth plates on maxilla and dentary. Dorsal fin with I,6, pectoral fin with I,11 or 12, pelvic fin with 7 rays and anal fin with 12-15 rays. Ground color pale yellow to pale green; dark-brown irregular blotches on body. All fins dark-grey.

Maximum standard length. 830.0 mm.

Distribution. Paraná-Paraguay system.

Remarks. Zungaro jahu was identified as Z. zungaro by Graça, Pavanelli (2007). Lundberg, Littmann (2003) considered the specimens from the rio Paraná-Paraguay basin as Z. jahu, and the specimens from the Amazon and rio Orinoco basin as Z. zungaro .