Pseudocorynopoma stanleyi – first record from Uruguay

Oligosarcus robustus – first record from Uruguay

Aphyocharax rathbuni – first record from Uruguay

Xyliphius barbatus is a sr. synonym of X. lombarderoi

Rineloricaria isaaci sp.nov from the Uruguay river

Synbranchus doeringii – a justified emendation

Cichlasoma scitulum sp.nov. from Argentina and Uruguay

Australoheros gen.nov. and 3 comb.nov. – A. facetus, A. tembe & A. scitulus

Zungaro jahu – Paulicea gigantea is an overlooked jr. synonym

Pseudostegophilus maculatus comb.nov. from Parastegophilus