Heat coconut oil in a large pot over medium heat. Add the chilies and quickly stir for about 10 seconds. Add the turmeric, ginger, mace, nutmeg, cloves, garlic, lime zest and cinnamon stick. Stir well. Cook the spices for about 1 minute, stirring constantly.
Add pumpkin, shallots, onion, carrots, celery, potatoes and lime leaves. Stir well and cook for 4 to 5 minutes. Add 3 cups of fish stock. Bring to a boil, reduce heat to medium low and add coconut milk and mango puree. Continue to cook stirring occasionally to keep ingredients from sticking until the potatoes are just fork tender, about 20-30 minutes.
Add shrimp, triple tail, and red snapper. Add remaining fish stock as required. Gently stir and simmer for 6-8 minutes until shrimp, triple tail and snapper are just cooked through.
Season with a little sea salt and freshly ground black pepper to taste and allow to rest for 5 minutes to allow all flavors to blend.
Serve spooned over yellow rice and garnish with fried shallots and a wedge of lime
Serves 4 to 6