First deep fry the fish.

In a pan fry your onions until slightly brown.

Then add your ginger and garlic

Let them cook for 2 mins. Until they brown

Add your tomatoes (I grated mine,you can blend)

Let it cook for 5 mins then add your spices and salt. Stir the paste and add ½ cup of water to the paste and let it boil for 1 min.

Add the fish to the paste and let it simmer for 2 mins. Garnish with dhania.