First clean the fish thoroughly and using a knife make 3-4 gashes on each side of the fish. Make a paste of some chilly powder, turmeric powder, lime juice,pepper and salt. Marinate the fishes using that. Keep it aside for one hour.
Heat coconut oil in a frying pan and add finely chopped onions. Once they start turning brown, add crushed ginger and garlic. Then add chilli powder, turmeric powder and coriander powder and saute well. Add lime juice and salt as per your taste. Keep it on simmer till you see oil clear up on the surface of the gravy. Turn the stove off and let it cool.
Take a banana leaf and place a fish and a sprig of curry leaf on it. Then pour some gravy over the fish. Smear the gravy well on both sides of the fish. Cover and seal the sides of the banana leaf. Grill both sides evenly in hot tawa or electric grill. Serve this spicy fish fry hot.
