A medium-sized piranha with a rounded body form that becomes increasingly disc-like as it matures. Juveniles have weak vertical banding on the flanks, but the adults are largely silver. The pectoral fins are orange as is the leading edge of the anal fin. The caudal peduncle and the leading edge of the tail fin are distinctly dark grey to black. Otherwise the fish is mostly silver.
A superb piranha for the aquarist looking for something a bit different.