Cnesterodon pirai sp.nov. from Misiones, Argentina

Synbranchus doeringii – a justified emendation

Clarias gariepinus – first record from Argentina

Cichlasoma scitulum sp.nov. from Argentina and Uruguay

Cheirodon ibicuhiensis – confirmed for Argentina

Characidium serrano – first record from Argentina

Characidium heirmostigmata – first record from Argentina

Characidium borellii – valid and from Argentina

Cetopsorhamdia iheringi – first record from Argentina

Cetopsis starnesi – first record from Argentina