Astyanax aff. fasciatus (Cuvier, 1819)

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: 26

publication ID 10.1590/1982-0224-20170094


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Astyanax aff. fasciatus (Cuvier, 1819)


Astyanax aff. fasciatus (Cuvier, 1819)  

Fig. 7 View Fig

Body elongated; greatest depth contained 2.9 to 3.4 and caudal peduncle depth 10.4 to 11.1 times in SL; head length 4.5 to 4.6, predorsal distance 2.0 to 2.1 and caudal peduncle length 9.5 to 13.3 in SL; snout length 3.4 to 3.6, horizontal orbital diameter 2.2 to 2.3 and least interorbital width 3.3 to 3.5 in HL. Mouth terminal; inner row of premaxilla with 5 teeth, outer with 4 or 5, dentary with 10-12, and maxilla with one tooth. Lateral line complete, with 34-36 pored scales; transverse series above lateral line with 5 or 5½ scale rows and below with 5 scale rows. Dorsal fin with 11, pectoral fin with 15, pelvic fin with 9, anal fin with 24-28, and caudal fin with 19 rays. Ground color silvery; black vertically elongated humeral blotch; silvery longitudinal band on flank (black in fixed specimens), from humeral blotch to median caudal-fin rays, larger on caudal peduncle, forming oval-shaped, horizontally elongated, blotch. Unpaired fins reddish, paired fins hyaline ( Graça, Pavanelli, 2007).

Maximum standard length. 102.0 mm ( Graça, Pavanelli, 2007).

Distribution. Drainages from Mexico to Argentina.