Phenacogaster tegatus – first record from Argentina

Phalloptychus januarius – not a species from Argentina

Phalloceros harpagos – first record from Argentina

Percichthys trucha – a sr. synonym of P. altispinis and P. vinciguerrae

Percichthys laevis revalidated from synonymy with P. trucha

Parodon nasus is a sr. synonym of P. tortuosus

Parodon suborbitalis – not a species from Argentina

Papiliolebias hatinne sp.nov. from Salta, Argentina

Otocinclus vestitus – first record from Argentina

Otocinclus flexilis – not a species from Argentina