Pimelodus ornatus Kner, 1858

Ota, Renata Rúbia, Deprá, Gabriel de Carvalho, Graça, Weferson Júnio da & Pavanelli, Carla Simone, 2018, Peixes da planície de inundação do alto rio Paraná e áreas adjacentes: revised, annotated and updated, Neotropical Ichthyology 16 (2), pp. 1-111 : 84

Pimelodus ornatus Kner, 1858

Fig. 29

Body deep; greatest depth contained 3.9 to 4.2 times in SL; head length 3.1 to 3.4, anal-fin base length 8.9 to 9.2, adipose-fin base length 4.9 to 6.0, maxillary-barbel length 1.6 to 1.8 in SL; snout length 2.1 to 2.3, horizontal orbital diameter 5.0 to 5.2, least interorbital width 3.1 to. 5 in HL; orbital diameter 1.5 to 1.7 in interorbital width. Mouth terminal; dentigerous tooth plates in both premaxilla and dentary. Dorsal fin with I,6, pectoral fin with I,13-15, pelvic fin with 6 and anal fin with 11-13 rays. Ground dark-brown; light-beige longitudinal band along lateral line; light-beige oblique bar from dorsal-fin origin to pelvic-fin origin. Hyaline fins; dorsal fin with dark-brown blotch; caudal fin with dark-brown longitudinal band on each lobe ( Graça, Pavanelli, 2007).

Maximum standard length. 330.0 mm ( Graça, Pavanelli, 2007).

Distribution. Widespread in South America rivers.

Remarks. Pimelodus ornatus is a non-native species from the upper rio Paraná and its occurrence can be associated with the filling of the Itaipu Reservoir and the consequent inundation of the Sete Quedas Falls.

Figures

Fig. 29. a. Pimelodus maculatus, NUP 12783, 214.4 mm SL, lagoa da Onça, Batayporã, State of Mato Grosso do Sul. b. Pimelodus microstoma, NUP 18158, 117.6 mm SL, rio Azul, Palotina, State of Paraná. c. Pimelodus mysteriosus, NUP 10824, 158.0 mm SL, lagoa do Guaraná, tributary of the rio Baía, Taquarussu, State of Mato Grosso do Sul. d. Pimelodus ornatus, 208.0 mm SL, fresh specimen, uncat. e. Pimelodus paranaensis, 168.0 mm SL, uncat.