Heat oil and fry the fish well marinated with salt and turmeric powder

Keep aside and add nigella seeds and green chillies

As it crackle add onion slices and saute well

Add ginger garlic paste and saute well adding salt and turmeric powder

Add tomato puree and saute well adding red chilli Powder

Now add water and boil add fish and cover till it become soft

Add sugar (optional) and chopped coriander leaves

Serve it with rice