Apareiodon affinis (Steindachner, 1879)

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 : 50

Apareiodon affinis (Steindachner, 1879)

Fig. 14

Body elongated; greatest body depth contained 3.2 to 5.4 and caudal peduncle depth 8.2 to 10.8 times in SL; head length 3.8 to 4.9, predorsal distance 1.9 to 2.2 and caudal peduncle length 7.0 to 12.1 in SL; snout length 2.6 to 3.6, horizontal orbital diameter 3.1 to 4.6, least interorbital width 2.3 to 3.4 and dentary width 3.7 to 5.9 in HL. Mouth subterminal; premaxilla with 4 or 5, maxilla with 2 or 3 and dentary with no teeth. Lateral line with 39-46 pored scales; transverse series above lateral line with 4½ or 5 scale rows and below with 3 or 4½ scale rows. Dorsal fin with 10-13, pectoral fin with 11-14, pelvic fin with 7-9, anal fin with 7 or 8 rays and caudal fin with 18 or 19 rays ( Pavanelli, 1999). Ground color silvery to pale yellow; black longitudinal band along lateral line, from opercle to median caudal-fin rays, without adjacent brown or grey blotches downwards; six to eight dark-brown transverse bars above longitudinal band. Hyaline fins or with few scattered brown cromathophores ( Graça, Pavanelli, 2007).

Maximum standard length. 151.0 mm ( Graça, Pavanelli, 2007).

Distribution. Paraná-Paraguay system.

Figures

Fig. 14. a. Pyrrhulina australis, NUP 3345, 29.5 mm SL, lagoa do Bilunga, Taquarussu, State of Mato Grosso do Sul. b. Apareiodon affinis, 93.3 mm SL, uncat.c. Apareiodon piracicabae, 120.0 mm SL, uncat. d. Apareiodon vladii, 102.1 mm SL, uncat. e. Parodon nasus, 102.5 mm SL, fresh specimen, uncat. f. Prochilodus lineatus, 495.2 mm SL, fresh specimen, uncat.