A special way of grilling fish

In giving me this recipe, my friend from Alor said that the best fish to use would be ekor kuning (which means yellow tail) or kakap (the sea perch of South-East Asia and Australia, where it is also known as barramundi). The latter can be substituted by sea bass or the like. The former is one (Caesio erythrogaster) of a large tribe of fish known as fusiliers, which are among the few economically important fishes of the coral reefs of South-East Asia. There is nothing ve