The dorado one reunites all the qualities that a sport fisherman looks for. It is a pregiver par excellence, with a high level of aggression and combat efficiency, of great beauty and has been registered so large superior to 30 kgs. In addition it presents a behavior that makes think to the fishermen about a level of intelligence superior to the one of the other fish. The dorado one is an emblematic fish for our country and has given rise to many legend that gives account of the privileged position that always it has had in the consideration of the ribereños.

Their anatomical characteristics are in relation to the power that exhibits the captured being. A wide head, strong jaws with two solid rows of teeth that force to add to leader of steel to avoid the cut, a body is very robust and something compressed, with great and strong head; the length of its mouth is almost half of the one of its head. The fin of great volume, impelling main in swimming has a characteristic form: two little salient lobes with the prolonged radii of great volume average and a central black spot and throughout the fin. Something that emphasizes when taking place the resentment and to jump outside the water, is its orange color, with the greenish back and the silver-plated belly. Each grudge of the back and flanks has a blackish brown spot; the fins are vividly orange with a red tone in the free margin.

It displays migratory habits, as much by feeding as by reproduction and it is transferred great distances. The divisions on the rivers, from the construction of hydroelectric prey affect their behavior and distribution. Or their areas egg-laying and many aspects of their Biology are not known, but some observations indicate that after putting and the fertilization, in about three or four days, and depending on the temperature of the water, takes place the appearance. Four or five days later the complete reabsorción of the vitelino coat takes place and begin to feed with small protozoos increasing the size of its prey with microcrustaceans and other organisms in the measurement that grows until becoming efficient piscívoro.