Black Arowana - Osteoglossum ferreirai is a South American freshwater bony fish of the family Osteoglossidae. They are native to both black and white water floodplains of the Amazon drainage basin (Rio Negro) in South America and aren't overly aggressive, although they will hold their own and occasionally chase off other larger fish species.It is critical that the aquarium has a tight fitting and secured lid that is extremely strong. Arownas are avid jumpers and can easily knock a heavy glass li