Potamoglanis johnsoni comb.nov. from Trichomycterus

Poecilia reticulata – first record from Argentina

Platydoras costatus – not a species from Argentina

Plagioscion ternetzi is a sr. synonym of P. macdonaghi

Pimelodus britskii – first record from Argentina

Pimelodella taenioptera – first record from Argentina

Pimelodella mucosa – first record from Argentina

Pimelodella howesi – not a species from Argentina

Pimelodella cristata – not a species from Argentina

Piabina thomasi comb.nov. from Bryconamericus