S. calliurus (Boulenger, 1900) N

original Chirodon calliurus

first record Nion et al. (2002)

remarks in N sub Serrapinnus piaba

Malabarba (2003) mentions a distribution for S.

calliurus in Uruguay, while he restricts S. piaba to

the Sao Francisco basin. Therefore we assume that

S. calliurus is the species found in Uruguay and

referred to by N.