I buy whole (gutted) frozen white fish score the skin and bake with a spicy marinade kind of thing.
3 green onions chopped finely
2 cloves garlic crushed
1 inch piece ginger – peeled and chopped finely
1 chilli seeded and chopped very fine (if you like it really spicy leave in the seeds or add another chilli)
1 Tbs Fish Sauce
1 lime Juiced
splash of olive oil (optional)
1 handfull cilantro roughly chopped
Combine all ingredients and mix well. Spread over outside of fish. Bake at 350F for 5 minutes each side. Then broil for 2 minutes each side to make it crispy (baking times will depend on how thick your fish is). I usually serve with rice and vegetables.