Metynnis polystictus

Metynnis est un genre de poissons téléostéens d'eau douce de la famille des Serrasalmidae (ordre des Characiformes) originaire d'Amérique du Sud.

Metynnis also commonly known as the silver dollar is a genus of freshwater ray-finned fishes belonging to the family Serrasalmidae, which includes the pacus, piranhas and related fishes. The fishes in this genus are found in tropical and subtropical South America. They are herbivorous or omnivorous, and inhabit a wide range of freshwater habitats, ranging from rivers and streams (both fast- and slow-flowing), to floodplains, flooded forests, lakes, pools and reservoirs.

Metynnis polystictus es una especie de pez de la familia Characidae en el orden de los Characiformes. Morfología Los machos pueden llegar alcanzar los 16,7 cm de longitud total. ​ Hábitat Es un pez de agua dulce y de clima tropical.