Marinate the drained fish pieces with turmeric and salt. Keep this aside.
Take a pan and pour 1 tsp coconut oil. Roast grated coconut along with aniseed, shallots and a few curry leaves till golden brown in color. Grind to a smooth paste and keep aside.
Take another pan and heat some coconut oil. Add fenugreek and when it starts spluttering, add sliced onion and green chillies. Saute well.