Coral trout is nearly impossible to keep in the average aquaria - maybe if the tank is measured in thousands of litres you might see one but to get one in the average home setup - they won't live very long. I think you'd also have to get your fish stock from the ocean as I have never see one in captivity - other than the great barrier reef oceanarium in Townsville.
BTW in 20 years of diving I don't think I've ever seen a fingerling of this species in barrier reef waters - possibly the juvenile is different from the adult that I might not have realised what I saw - but never seen a coral trout less than at least sandwich plate size.
These fish have got to be the best tasting fish in the world, but once frozen you might as well eat fish fingers. They have to be on a plate within 8 hours of being caught - this is why you wont seen them served anywhere else other than far north Qld.
PSIf your going to get Ciguatera poisoning from eating contaminated reef fish then this is the most likely culprit. More people circum to Ciguatera from this species than any other reef fish.