Redescription of Astyanax correntinus (Holmberg, 1891) (Teleostei: Characiformes: Characidae), more than one hundred years after original description

MIRANDE, JUAN MARCOS; AZPELICUETA, MARÍA DE LAS MERCEDES; AGUILERA, GASTÓN

ZOOLOGISCHE ABHANDLUNGEN (DRESDEN)

Staatliche Naturhistorische Sammlungen Dresden, Museum für Tierkunde

Lugar: Dresden, Alemania; Año: 2006 vol. 55 p. 9 - 15

0375-5231

Astyanax correntinus (Holmberg, 1891) is redescribed with recently collected material from the río Paraná near Corrientes city, northeast of Argentina. This species is distinguished by a combination of characters: (1) the possession of 8/6–7 transverse scales; (2) the presence of 39–42 perforated scales in the lateral series; (3) the presence of iv–v, 29–33 anal-fi n rays; (4) the absence of circuli on posterior fi eld of scales; (5) the broad silvery lateral band; (6) a small rounded humeral spot, and (7) the presence of pentacuspidate outer premaxillary teeth. Several characters are compared with those of Astyanax pelegrini Eigenmann, 1907 from the río Paraguay, in Bahía Negra, Paraguay.