Pterobunocephalus depressus – first record from Argentina

Pseudoplatystoma reticulatum – a valid species from Argentina

Pseudoplatystoma fasciatum – not a species from Argentina

Prochilodus lineatus is a sr. synonym of P. platensis and P. scrofa

Prochilodus argenteus – not a species from Argentina

Potamotrygon motoro is a sr. synonym of P. pauckei

Potamotrygon falkneri is a sr. synonym of P. castexi

Potamotrygon amandae – first record from Argentina

Potamoglanis johnsoni comb.nov. from Trichomycterus

Poecilia reticulata – first record from Argentina