Slideshow · Animals
Incredible Animals That Live in Rivers
From pink dolphins to razor-toothed giants -- the world's rivers hide creatures more incredible than any ocean.
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Incredible Animals That Live In Rivers 
10. PiranhaSchools of piranhas can strip a carcass to bone in minutes -- their razor-sharp serrated teeth are no myth. 
9. Duck-Billed PlatypusEgg-laying, venomous, and equipped with a bill that detects electric fields -- the platypus defies biology. 
8. Electric EelElectric eels generate up to 860 volts -- enough to stun a horse and one of the highest bioelectric outputs on Earth. 
7. Bull SharkBull sharks thrive in fresh water, venturing miles inland via rivers -- making them one of the deadliest sharks alive. 
6. Nile CrocodileThe Nile crocodile has the most powerful bite force ever recorded and hasn't changed in 200 million years. 
5. ArapaimaGrowing over 3 metres long and able to breathe air, the arapaima is the Amazon River's supreme fish predator. 
4. Giant Freshwater StingrayWeighing over 300kg, the giant freshwater stingray of Southeast Asia is the world's heaviest freshwater fish. 
3. Amazon River DolphinThe pink Amazon river dolphin navigates flooded forests by echolocation -- and no two are the same shade of pink. 
2. HippopotamusHippos kill more humans in Africa than lions or leopards. Their skin secretes a natural red sunscreen. 
1. Goliath TigerfishThe Congo River's apex predator grows to 50kg with interlocking dagger-like teeth that can terrify even crocodiles.
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