Seer fish in coconut milk

Seer fish/ neymeen 500 grams, cut into 4 cm cubes and cleaned.
Kerala fish masala 2 tbsp., green chilly 4, silted, ginger paste 1 tsp., garlic paste 1/2 tsp., salt to taste,
tamarind paste 2 tsp., curry leaf a sprig, shallots 6, finely chopped.
Mix the ingredients except fish in a cup of water, allow to boil, drop in fish pieces, allow to boil,
simmer flame, allow to cook well, add coconut milk, allow to bubble. Garnish with more curry leaves.
Serve with rice.