Arowana Viewing Lights

[Defalt]

I have an 16cm RTG asian arowana in a tank with black background and black sand. During the day it looks decent, but the rest of the time it looks really bad. I tried using a hanging blue+white viewing light and it just looks really dull. I'm planning to add tube led lights, any idea what colors I should get and the placement and angle to optimize the arowana's golden shine?

 

[Arowana_forever]

Try a light which mimics the sunlight... works best for rtg