| record potential | water |
| Yellowfin River Pellona Flatwhiskered Catfish Acoupa Weakfish Chameleon Cichlid South American Lungfish South Am. Freshwater Stingray Porcupine River Stingray |
whole country whole country whole country whole country Parana River system whole country whole country |
| continent country capital population sq km |
America
(South America)
|
| background |