Characidae

Bertora, Andrea, Grosman, Fabián, Sanzano, Pablo & Rosso, Juan J., 2018, Fish fauna from the Langueyú basin, Argentina: a prairie stream in a heavily modified landscape, Check List 14 (2), pp. 461-470 : 465

Characidae

Astyanax pampa Casciotta, Almirón & Azpelicueta, 2005 Astyanax pampa Casciotta et al. 2005: 402 .

Material examined. Table 2, Figure 3A

Mouth horizontal and terminal. Lower jaw slightly longer than upper jaw. Two rows of teeth on premaxilla, the inner row with 5 teeth; 1 small, most frequently tricuspidate tooth in the maxillary bone. Three to 4 small teeth following main dentary teeth. Third infraorbital not contacting laterosensory canal of preopercle. Lateral line complete with 35–37 perforated scales. Four scales in contact with the supraoccipital bone. Less than 20 branched anal fin rays.

Bryconamericus iheringii ( Boulenger, 1887) Tetragonopterus iheringii Boulenger 1887: 172 .

Tetragonopterus pliodus Cope 1894: 90 .

Bryconamericus boops Eigenmann 1908: 105 .

Material examined: Table 2, Figure 3B

Blunt snout. Mouth opening at the ventral margin of the orbit. Upper jaw slightly larger than lower jaw. Two rows of teeth on the premaxilla with four teeth in the inner series and maxilla with 2 to 4 teeth. A large third infraorbital contacting the preopercle along its posterior and ventral margins; a complete lateral line with 35 to 40 perforated scales. Two to two and a half scales in contact with the supraoccipital bone. Anal-fin rays 18-23.