Schizodon nasutus 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 : 23

Schizodon nasutus Kner, 1858

Fig. 5

Body elongated; greatest depth contained 3.0 to 4.3, caudal peduncle depth 10.2 to 10.4 times in SL; head length 4.0 to 4.5, predorsal distance 2.0 to 2.2, caudal peduncle length 8.3 to 8.5 in SL; snout length 2.2 to 2.8, horizontal orbital diameter 3.6 to 4.6, least interorbital width 2.0 to 2.6 and dentary width 5.0 to 5.5 in HL. Mouth subterminal, snout prominent; premaxilla and dentary with 4 teeth, no maxillary teeth. Lateral line with 42 or 43 pored scales; transverse series above lateral line with 5 or 5½ scale rows and below with 4-5 scale rows. Dorsal fin with 14, pectoral fin with 15, pelvic fin with 9, anal fin with 9 or 10 and caudal fin with 19 rays ( Garavello, Britski, 1990). Ground color silvery to yellowish; black horizontally elongated blotch on caudal peduncle, extending to median caudal-fin rays. Yellowish fins ( Graça, Pavanelli, 2007).

Maximum standard length. 390.0 mm ( Graça, Pavanelli, 2007).

Distribution. Río de la Plata basin.

Figures

Fig. 5. a. Megaleporinus macrocephalus, NUP 1838, 470.0 mm SL, rio Chopim, Cruzeiro do Iguaçu, State of Paraná. b. Megaleporinus obtusidens, 190.8 mm SL, fresh specimen, uncat. c. Megaleporinus piavussu, 148.9 mm SL, fresh specimen, uncat. d. Schizodon altoparanae, MZUSP 41102, holotype, 282.2 mm SL, rio Paraná, in front of Jupiá, Três Lagoas, State of Mato Grosso do Sul. e. Schizodon borellii, 207.5 mm SL, fresh specimen, uncat. f. Schizodon nasutus, NUP 2495, 160.0 mm SL, Itaipu Reservoir, Santa Helena, State of Paraná.