Can arowana eat algae ?

[Kingfish]

I want to find a ways to make my arowana change colour quicker. Hes changing some colour but I want a quicker way . Or any tips . Lights done , food. Done , shrimp done , cricket done , molly done . platy done . I breed molly and platy . So it’s all
Good and they’re healthy . Anyways ......?????

 

[Brookster123]

Gutload feeder fish with color enhancing flake/pellets.