[i have crabs]

buy silversides,smelt and shrimp, cut it up to a size it can eat, its a predator and needs to eat whole fish, pellets and mysis wont cut it for long, try to feed every second or third day,
as far as reef compatible goes, any small fish and any shrimp are gonners corals will be fine,you probably have about a year in your current tank and i would guess a final size of 18-24" for this fish in captivity which is a big fish trust me, you will probably need a 300g minimum tank within 2 years to keep this fish long term

i agree with fish store not importing these fish along with other very large fish unless ordered by someone with a proper home, im shure people with big enough systems for large fish and sharks wouldnt mind paying a larger price to get what they want, then again it might be better than ending up as chum or dinner on a beach somewhere