Four foreign species of freshwater dolphin 1. Asian puffer fish (Jiabegeoj (f1,Shaoma) is the largest species of freshwater dolphin, inhabiting the Amazon River and Orinoco River basins, and distributed in Brazil, Bolivia, Peru, Ecuador, Colombia, Venezuela and Guyana. The sub-puffer fish has no wandering phenomenon. It feeds on more than 50 kinds of fish. Human activities make the life of sub-puffer fish suffer …