That's the way i have done it in the past, however some people are a bit squeamish and would not want to to that.Clove oil, boiling or cold water would not kill the fish straight away. If I have to dispatch a fish I quickly wrap them in tissue paper and hit them once, very hard with a rolling pin. If it was me then I would rather that than being burned, frozen or suffocated in oil.
While cold water does not kill the fish straight away, but it does make it unconscious so that the fish feels nothing as its body shuts down. Boiling wter is not recommended. Your swift physical despatch method is humane, if a bit gory for some people.Clove oil, boiling or cold water would not kill the fish straight away. If I have to dispatch a fish I quickly wrap them in tissue paper and hit them once, very hard with a rolling pin. If it was me then I would rather that than being burned, frozen or suffocated in oil.
Sorry for your loss.