Nantis nom.nov. – substitute for preoccupied Nans

Myloplus asterias – not a species from Argentina

Imparfinis mishky sp.nov. from Corrientes, Argentina

Imparfinis cochabambae – not a species from Argentina

Iheringichthys megalops – first record from Argentina

Hypostomus roseopunctatus – first record from Argentina

Hypostomus formosae sp.nov. from Argentina

Hypostomus cordovae revalidated from synonymy with H. paranensis

Hypostomus boulengeri – first record from Argentina

Hypostomus aspilogaster – first record from Argentina