Clean and wash the fish pieces. In a small plate, make a smooth thick paste of ginger-garlic, half of the spice powders- turmeric powder, chilli powder, coriander powder, fenugreek powder, pepper powder, lemon juice, salt, & little water. Rub this marinade to the fish pieces and leave it aside for 30 mins to an hour.

Heat oil in a pan. Add the marinated fish and fry until golden. Flip to the other side and fry until cooked. Transfer them to a plate and keep aside. In the same pan, add oil. Splutter the curry leaves. Add the sliced onions & green chilies. Saute until translucent and golden. Add the ginger and garlic and saute until the raw smell goes away.

Reduce the flame and add the remaining spice powders and mix well. Fry until the masala starts to leave the sides of the pan. Add the chopped tomato and salt and mix well. Cook until tomato turns soft & mushy. Add the coconut milk and stir well. To this, arrange the fried fish & coat it completely with the masala.

Cover and cook for 5-10 minutes on low flame until the gravy thickens. Garnish with curry leaves and serve with steamed rice or roti.