Both crabs and snappers like to eat rotting food such as animal carcasses, and their stomachs and intestines often contain disease-causing bacteria and toxic substances. And these germs will multiply after the crabs and snappers die.

Additionally, crabs and snappers contain a large amount of histaminic acid, which can be easily decomposed into histamine and histamine-like substances under the action of decarboxylase enzyme, especially after the death of crabs and snappers, the decomposition of histaminic acid is more rapid.

The longer the crab or turtle is dead, the more histamine accumulates in its body. Histamine is a toxic substance that can cause food poisoning when it accumulates to a certain amount in the human body. Therefore, it is not advisable to eat dead crabs and dead snappers.