wow its georgous!
i have kept *many* , with 0% success..
Ive raised a number from 2" -> 1 foot, they always died.
I bought a 7yr old 2' one from a respected lfs (traded flowerhorn fry for it actually)
it was doing fine for a number of months, but I had a heat wave and lost him when tank temp went too high.
I got another one years later, around 16" ... it was extremely aggressive and i was forced to remove it from the tank.. I sold it to another aro owner, who unfortunately lost him shortly after the move
all in all I've raised about a dozen of these fish, and I'm done.
my conclusion, they need impeccable water quality and are very sensitive to any sudden change.