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

Remove the fish and add nigella seeds and slitted green chilli

Add onion slices and saute well

Now add ginger garlic paste and saute

Add salt, turmeric powder,red chilli powder and saute

Add tomato pureed saute till oil separates

Add water and simmer adding fish till it gets soft

Serve it with rice