We didn't measure but I think it was closer to 2'...we caught another about the same size a little later that day.
I seem to recall Felipe saying that he has caught Dorado up to 100m inland (into Uruguay), so I'm sure there are some variations to the fish as they get isolated in smaller bodies of water than the big rivers.
We caught some in a pond in Bella Union, Uruguay (which is north on the Rio Uruguay of Salto, where these pics were taken). Basically the Rio Uruguay periodically floods and deposits larger river species (like Dorado, big cats, Prochilodus and Leporinus) in smaller bodies of water near it. Bella Union is in NW Uruguay where Uruguay meets Argentina and Brazil.
I was being a bit tongue and cheek about Argentinian and Uruguayan differences in dorados because, I think, people make too much of geographic borders vs. watersheds and natural barriers. It's not as if Mother Nature knows or cares where the arbitrary demarcation between Uruguay and Argentina (or Uruguay and Brazil) is. In the vicinity of the Rio Uruguay, there is the same distribution of fish as in Uruguay near the river (i.e. Gymnogeophagus, tetras, Crenicichla, Chanchitos, etc.)....
I don't think too many Uruguayan dudes would rock a turquoise thong to go fishing...Argentinians on the other hand...
That said, Argentina is a big place and I know very little about it's fish outside of the little area. It wouldn't surprise me if further south in Argentina (in Patagonia), there were really different varieties...but I honestly don't know.
Matt
So do you think these "big headed Argentinians" are just the same old Dorado? Can you elaborate?
How big is that one in the pics? 14-15"?