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The symptoms of ciguatera poisoning can last for 1 to 2 weeks. Exactly how long they last will depend on the amount of poison you have in your body. The symptoms can come back any time you eat an affected fish.
The symptoms of scombroid poisoning last for 6 to 8 hours after you eat an affected fish. The symptoms can come back any time you eat fish that has not been refrigerated properly.
Ciguatera and scombroid poisoning are rarely fatal.
To avoid ciguatera poisoning, don't eat the fish that commonly carry the poison. This includes amberjack, grouper, snapper, sturgeon, king mackerel, barracuda and moray eel. The poison is more concentrated in a fish's internal organs so you should never eat them.
To avoid scombroid poisoning, don't eat any fish that has not been refrigerated properly. Be especially careful when you eat fish such as tuna, sardines, mahi-mahi or anchovies.
