Chop half of the curry leaves finely.
In a large bowl, mix toghether the marinade ingredients - chopped curry leaves, turmeric, ground chili powder, ground coriander seeds, salt, lime and ginger garlic paste.
Add 1 -2 tablespoon water to make it into a thick paste. Taste and adjust the salt, chili and lime if needed. We are looking ofr toothpast consistency
Wash the fish. Pat it dry with a kitchen towel. Add the cleaned fish to the marinade.Gently apply the marinate to both sides of the fish.
Marinate for 15 minutes minimum. It's best to marinate for 12 hours in the refrigerator. Check notes for freezing.
Heat a cast iron or non stick pan. Once hot, add 2 tablespoon oil and let it heat through.
On low heat, gently place the fish and cook for 3-4 minutes per side. Flip using a broad spatula or fish turner. Cook the other side.
Repeat with rest of the fish.Add more oil if needed.
In the leftover hot oil, add the rest of the curry leaves.Fry till they turn crispy amd top tje fish fry with it.