Our guides have been exploring the area and its dorado fishing itself for more years than most. Do follow their advice. The Dorado (salminus brasiliensis) is an aggressive, acrobatic fish. It can be found near confluences, on edges of eddies, riffles, sharp bends in the current, and close to overhanging carpets of water hyacinth. It can be fished in narrow runs, on skinny water, large fish are hooked in a multitude of differing locations in the river.