Broil the coriander, chillies , turmeric, onions and garlic in a hot greased skillet.
Grind the broiled ingredients to a fine paste.
Mix together the paste, fish, mango pieces, curry leaves and salt along with two cups of water and cook on a moderate fire.
When it starts to boil, add the onion, ginger and green chili mix, the ground coconut with 1/4 cup of water.
Let the curry simmer and thicken.
Finally, pour the oil onto the curry and gently shake the pan. Remove from fire.