Stir for 3-4 minutes until the raw smell disappears.Add asafoetida powder and stir well.
Add 2 more cups of boiled water and little salt. Reduce heat to medium and add the fish.
Sprinkle 1/4 tsp fenugreek powder and stir. Add tomato pieces. Cook for 15 minutes.
Switch off the stove. Garnish with curry leaves. Keep this fish curry for at least 4-5 hours before serving so that the fish absorbs all the flavors. Serve with rice.