Sternarchorhynchus britskii Campos-da-Paz, 2000

Fig. 16

Body elongated and compressed; greatest depth contained 6.9 to 7.9 times in TL; head length 4.7 to 5.2, analfin base length 1.1, preanal distance 7.0 to 8.2 and prepectoral distance 4.6 to 5.1 in LEA; snout length (prolonged into rostrum) 1.5 to 1.6, horizontal orbital diameter 24.4 to 32.2 and least interorbital width 14.1 to 21.7 in HL. Mouth terminal. Pectoral fin with 14-15 and anal fin with 166 to 178 rays. Transversal series above lateral line with 11 to 13 scale rows (Campos-da-Paz, 2000). Ground color brown, with middorsal light-brown stripe on head. Light-brown fins (Graça, Pavanelli, 2007).

Maximum total length. 212.0 mm (Graça, Pavanelli, 2007).

Distribution. Upper rio Paraná basin.