The Amazon River Dolphin (Inia geoffrensis) is the largest species of river dolphin, with adult males reaching 185 kilograms (408 lb) in weight, and 2.5 metres (8.2 ft) in length. Adults acquire a pin.. Read more »k color, more prominent in males, giving it its nickname "pink river dolphin". Gray Dolphin (Sotalalia fluviatilis)
Colombia
