Cynodon septenarius

Cynodon septenarius, the silver paraya, is one of three species of dogtooth characins in the genus Cynodon. It is the most recently described member of its genus. This fish is found in tropical fresh waters of South America, including the Amazon and Orinoco basins, and rivers in Guyana.

Description
This species reach a maximum length of 31.2 cm in length. It largely resembles the better-known relative C. gibbus.