While this is a cool aquascape in concept, the execution comes up a bit short in our humble opinion. For starters, mixing arowanas with discus is a terrible idea. In the short 44-second video alone, you can see the discus are repeatedly startled by the small arowana; just imagine how terrified they’ll be when the arowana grows up! This would be a much more harmonious exhibit without the discus (or arowana).
The open top is also asking for trouble since arowanas are prolific jumpers. The last thing anyone wants to see is a very expensive, endangered fish carpet-surfing. The lowered water level in this aquascape reduces the chance of such a tragic event, but it’s still a risk especially as the fish grows.
Still, the concept is very cool, unique, and worth sharing.