My family named this Fish dish 'Chilli Fish'. My mom used to cooked this dish with Ikan Kembong or Ikan Selar. But I'm using Greasy Grouper. My sisters also learn how to cook this dish and even her children love it.
Method: Blend the chillies, large onion and belachan coarsely in a blender or chopper. Cut the top of the fish on both sides and stuff with the chilli. Heat up 3 tbsps of oil and Fry with on both sides and scoop up oil to cook the chilli inside of the fish.