I really don't want to lose the small one. How long can it survive without food?
My friend's aro (red banjar) took 5 weeks before it started to eat something, aros can starve for quite some time from what I've read.
Did you ask the seller what he used to feed them ?
Another idea would be to take out your other fishes and only have the 3 aros in this tank, that's something my LFS always recommend when he sells an aro.
Cheers.
