Wash fish fillets very carefully 3-4 times with running water and keep it in strainer for drain excess water
It will take 15 minutes
Put fishes in a large bowl
Add curd, onion paste, ginger- garlic paste, turmeric powder, chilly powder, salt and mix very well
Keep this marinated fish for atleast 5-6 hours in fridge
Heat a flat kadhai / pan on high flame
Heat Mustard oil and ghee on high flame
Reduce heat on medium flame
Crack cumin seeds, whole garam masala, bayleaves and green chillies till aroma comes out
Add chopped onion n pinch of salt in pan and fry till it turns to light pink colour
Now place all pieces and marinated spices in a proper manner in pan
Shake pan in between 2-3 times so that it will not stick to pan
After 7 minutes turn fish fillets very carefully
Again shake it 2-3 times
It can be stir once very carefully
Just put stefula in middle and shake very slowly
When spices change its colour and oil comes out from spices means it is ready
Sprinkle coriander leaves and switch off gas stove
Serve warm fish with plain chapati, parathas, pooris or nan