Also known as Giant Arapaima, Pirarucu.
Found in freshwaters of the Amazon River Basin.
They feed on fish and crustaceans.
These fish are known to leap out of the water when threatened!
Considered the largest freshwater fish as they can reach a length of 450cm!
They build a nest on the sandy bottom when spawning to guard their young.
Length - 200cm
Depth - ?m
Widespread South America
The name "bonytongues" is derived from a toothed bone on the floor of the mouth, the "tongue", equipped with teeth that bite against teeth on the roof of the mouth. The arowana is a facultative air breather and can obtain oxygen from air by sucking it into its swim bladder.
https://en.wikipedia.org/wiki/Arowana Ref: http://www.fishbase.org/summary/Arapaima-gigas.html