Hypostomus spiniger revalidated from synonymy with H. commersoni

Diapoma is a sr. synonym of Cyanocharax

Austrolebias bellottii is a sr. synonym of A. apaii

Astyanax lacustris is a sr. synonym of A. asuncionensis

Scleronema macanuda – first record from Argentina

Ituglanis australis – first record from Argentina

Corydoras aurofrenatus is a sr. synonym of C. ellisae

Scleronema milonga sp.nov. from Argentina

Scleronema operculatum – not a species from Argentina or Uruguay

Oligosarcus hepsetus – not a species from Argentina or Uruguay