Well, I wouldn't go THAT far.
I don't even know why Heterotis niloticus is called "African arowana." It is actually far more closely related to Arapaima gigas than to any of the species within the true "arowana" genera, Osteoglossum and Scleropages. In fact, while Heterotis and Arapaima were previously included within the family Osteoglossidae along w/ Osteoglossum and Sclerpages, they have recently been placed within a separate but related family Arapaimatidae.
Very cool fish, IMO. I have two of them, a 12 incher and an 18 incher.
