nining, I think it's better to get it frm the wet market, they are fresher. As for which part, I also need to find out, cause all these while only know how to eat, but don't know how to buy fish.
Btw, mummies, how do you know whether the fish is fresh or not? All these time, when I buy fish, just anyhow choose, but so far very lucky, the fish turn out to be very fresh.