The Pacu, or Tambaqui, is native to the Amazon and Orinoco river systems of South America. A relative of the piranha, this species feeds on seeds and fruits that fall into the water, using its flat grinding teeth to crush its meals. This species has beennnSpecifications:nnThe skull is removable from the standnGreatest Width 16 cm (6.3 in.)nGreatest Height 31 cm (12.2 in.)