Parauchenipterus galeatus (Linnaeus, 1766)

Fig. 18

Body deep; greatest body depth contained 3.5 to 3.9 times in SL; head length 4.5 to 4.8, anal-fin base length 2.2 to 2.5 in SL; snout length 2.5 to 2.9, horizontal orbital diameter 4.8 to 5.2, least interorbital width 1.6 to 1.9 in HL. Mouth terminal with dentigerous tooth plates in both premaxilla and dentary. Dorsal fin with I,6, pectoral fin with I,7, pelvic fin with 7 or 8 and anal fin with 21-24 rays. Adipose fin present. Ground color pale yellow to orange with several dark-brown irregular blotches as well as fins (Graça, Pavanelli, 2007).

Maximum standard length. 285.0 mm (Graça, Pavanelli, 2007).

Distribution. Widespread in South America rivers.