Can you freeze fish curry with coconut milk?
How to Make Space-Saving Freezer Thai Curry - Hot Thai Kitchen
Nigella's Keralan Fish Curry (from Nigella Summer and on the Nigella website) has a sauce made from coconut milk and fish stock and this should freeze without any problem. If the curry boils hard it will toughen the fish. Also stir the curry carefully while it is reheating, to avoid breaking up the fish too much.