Heat the butter or ghee in a deep pan or wok and add the curry powder, coriander, turmeric, salt, paprika and chili flakes. Mix and cook for a few seconds to release the flavors.
Add the salmon chunks, zucchini and onion to the pan and stir gently to coat with the spice paste.
Add the minced garlic and stir.
Pour in the coconut cream and the heavy cream and bring to a gentle simmer over medium heat for 5-7 minutes until the sauce thickens.