Piabina argentea Reinhardt, 1867

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 : 42

Piabina argentea Reinhardt, 1867

Fig. 11

Body elongate; greatest body depth contained 3.8 to 4.3, caudal peduncle depth 9.2 to 11.1 times in SL; head length 3.5 to 4.1 and predorsal distance 1.9 to 2.1 in SL; snout length 3.2 to 3.7, horizontal orbital diameter 2.8 to 3.4, and least interorbital width 3.3 to 3.7 times in HL. Mouth subterminal; outer row of premaxilla with 2-3, median row with 2 and inner row with 4, dentary with 6-7 and maxilla with 2 or 3 teeth. Lateral line complete, with 37-39 pored scales; transverse series above lateral line with 5 scales above and below with 3-4 scale rows. Dorsal fin with 10, pectoral fin with 12-13, pelvic fin with 9, anal with 18-21, and caudal fin with 19 rays ( Vari, Harold, 2001). Ground color silvery to pale yellow; black humeral spot, with irregular limits; dark-brown longitudinal band, from humeral spot to median caudal-fin rays. Hyaline fins ( Graça, Pavanelli, 2007).

Maximum standard length. 74.0 mm ( Graça, Pavanelli, 2007).

Distribution. Río de la Plata and rio São Francisco basins.

Figures

Fig. 11. a. Bryconamericus exodon, 55.8 mm SL, fresh specimen, uncat. b. Bryconamericus aff. iheringii, NUP 824, 50.0 mm SL, rio São Vicente, Missal, State of Paraná. c. Bryconamericus turiuba, NUP 6170, 59.3 mm SL, rio Iguatemi, tributary of the rio Paraná, Coronel Sapucaia, State of Mato Grosso do Sul. d. Diapoma guarani, NUP 17635, 31.2 mm SL, Canal da Piracema, Foz do Iguaçu, State of Paraná. e. Knodus moenkhausii, NUP 3211, 48.0 mm SL, riacho Água Nanci, Porto Rico, State of Paraná. f. Piabarchus stramineus, NUP 3298, 70.0 mm SL, rio Paraná, Porto Rico, State of Paraná. g. Piabina argentea, 68.0 mm SL, uncat. h. Planaltina britskii, NUP 11802, 27.5 mm SL, lagoa Genipapo (ilha Porto Rico, Foz do Iguaçu, State of Paraná.