Rhinodoras dorbignyi (Kner, 1855)

Fig. 20

Body deep; greatest body depth contained 3.5 to 4.5, head length 3.1 to 3.6 times in SL; snout length contained 1.9 to 2.2, horizontal orbital diameter 6.5 to 9.8 and least interorbital width 4.7 to 6.2 times in HL; orbital diameter contained 1.2 to 1.8 times in interorbital width. Mouth subterminal; with dentigerous plates in both premaxilla and dentary. Lateral line with 27-28 plates. Dorsal fin with I,6, pectoral fin with I,8-10, pelvic fin with 7 and anal fin with 8 or 9 rays. Ground color yellowish; dark-brown irregular blotches on body. Hyaline or light-beige fins with darkbrown blotches and spots (Graça, Pavanelli, 2007).

Maximum standard length. 172.0 mm (Graça, Pavanelli, 2007).

Distribution. Paraná-Paraguay system.