Odontesthes bonariensis (Valenciennes 1835)

Material examined. 6 exemplars; 81.7 - 98.3 mm SL. CI FML 7936, 6 ex, 27° 16’ 56.04”S 65° 57’ 58.24”W, Tesoro Lagoon .

Identification. Less than 60 scales on the lateral line; 11-15 scales on a transversal row; dorsal and anal fins with a spiny unsegmented anterior ray; 2 dorsal fins; dorsal fin at the vertical line that passes through the anus; second dorsal finishes at the same level than the anal fin, or slightly posterior; with horizontal silver stripes on the sides of the body (Serra et al., 2014; Ringuelet et al., 1961; Dyer, 2000).