: In the wild, they can grow up to 300 cm (nearly 10 feet) and weigh up to 300 kg. Even in captivity, they easily top 120 cm (48 inches).
: A juvenile might survive in a 300-gallon tank temporarily, but a fully grown adult requires several thousand gallons—essentially a massive indoor pond or public aquarium-scale system.
: They are relatively hardy but appreciate strong water flow and high oxygen levels to mimic their natural river habitats.