Gymnorhamphichthys britskii – first record from Argentina

Gymnogeophagus taroba sp.nov. from Misiones, Argentina

Gymnogeophagus setequedas – first record from Argentina

Gymnogeophagus lipokarenos – first record from Argentina

Gymnogeophagus jaryi sp.nov. from Misiones, Argentina

Gymnogeophagus gymnogenys – not a species from Argentina

Gymnogeophagus constellatus – first record from Argentina

Geophagus brasiliensis – first record from Argentina

Gambusia holbrooki – first record from Argentina

Galeocharax knerii – not a species from Argentina