Red Ruby Piranha ノートブック

It is a member of the Piranhas and pacus family and is native to the Amazon and Paraguay-Paraná River basins in South America. It is usually found in small groups of up to 20 individuals which appear to have a definite range within a pond or a creek. It feeds mostly on fins and muscle portions of fishes and may scavenge on dead mammals. It can reach a maximum length of 34.5 cm (13.6 inches).