How can we eat such a big fish?

I found this enormous fish in a restaurant in Ma On Shan.
When I compare the smaller fish below with it, I will certainly say, "小巫見大巫".
These are the questions I have in mind:
(1) How can we cook it without chopping it into pieces? It is too big to be put inside a wok. It is too thick to be cooked.
(2) How much does it cost? Two thousand or three thousand dollars?
(3) How many people can this fish serve?
(4) How much time should be used to cook it?
(5) Where comes the fish? From the South China Sea or further away from Hong Kong?
(6) What does it feed on before it becomes food on the table?