Color of Life:
Juveniles are generally silvery-green on the body without distinctive spots or marks with an exception being a dark blemish found the caudal of some specimens. The fins are hyaline and transparent. In adults the body is generally bright silvery in the dorsal-lateral and posterior of the body. The pectoral and pelvic fins are orange to firey red. A black blemish (the diameter of the eye) is found in the humeral region near the first few scales of the lateral line. The head is dark dorsally; silver with yellow and orange coloration on the regions of the ventral-lateral and mandible. The orbit (eye) is red. The dorsal and anal fin are grey. The anal fin has a dark band distally from the first primary rays. The caudal and adipose fin are very dark in adults of large size. Small specimens have the adipose fin more hyaline. The pectoral and pelvic fins are colored red to orange tinting. (Machado-Allison and Fink, 1996).
Food:
Very little is known about the habits during the first stages of the development, nonetheless, the few obtained the data demonstrate it to be principally a predator from early age consuming fins and scales of other fish. The adults are found in deep, white water of the main channels. The juveniles are frequently found in black and white waters and are generally associated with lagoons of floating aquatic plants.