Nans indefessus gen. + sp.nov. from Salta, Argentina

Myoglanis collettii – not a species from Argentina

Myloplus tiete comb.nov. from Myleus

Mugil curema – first record from Argentina

Moenkhausia intermedia – not a species from the La Plata basin

Moenkhausia bonita – first record from Argentina

Mimagoniates barberi – first record from Argentina

Microglanis nigrolineatus sp.nov. from Salta, Argentina

Microglanis cottoides – not a species from Argentina

Microglanis carlae – first records from Argentina