Heat oil and deep fry the fish well keep aside

Add Potatoes and fry mixing salt and turmeric powder till golden brown

Remove it and add oil, temper nigella seeds and green chillies

Add ginger garlic paste and saute well

Add onion slices and saute well till translucent

Add tomato and red chilli Powder and stir

Now add the Potatoes and mix,pour water and simmer

Add fish and simmer

Serve it.