Steindachneridion melanodermatum – first record from Argentina

Triportheus pantanensis – first record from Argentina

Silvinichthys pedernalensis sp.nov. from San Juan

Triportheus nematurus is a sr. synonym of T. paranensis

Silvinichthys pachonensis sp.nov. from San Juan

Xyliphius barbatus is a sr. synonym of X. lombarderoi

Silvinichthys leoncitensis sp.nov. from San Juan

Tridentopsis pearsoni – not a species from Argentina

Silvinichthys huachi sp.nov. from San Juan

Silvinichthys gualcamayo sp.nov. from San Juan