Aphyocharax rathbuni – first record from Uruguay

Trichomycterus rivulatus – first record from Argentina

Scleronema macanuda – first record from Argentina

Ituglanis australis – first record from Argentina

Corydoras aurofrenatus is a sr. synonym of C. ellisae

Loricaria holmbergi – first record from Paraguay

Hemiancistrus punctulatus – first record from Uruguay

Scleronema milonga sp.nov. from Argentina

Scleronema macanuda sp.nov. from Uruguay

Scleronema teiniagua sp.nov. from Uruguay