Silvinichthys bortayro sp.nov. from Salta, Argentina

Serrasalmus serrulatus is not a species from Argentina

Serrasalmus rhombeus – not a species from Argentina

Serrapinnus piaba – not a species from Argentina

Saccoderma hastata – not a species from Argentina

Roeboides microlepis is a sr. synonym of R. bonariensis

Roeboides descalvadensis is a sr. synonym of R. paranensis

Roeboides affinis is a sr. synonym of R. prognathus

Rineloricaria zaina – first record from Argentina

Rineloricaria stellata – first record from Argentina