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Improperly stored fish can develop high levels of histamine, leading to scombroid poisoning. This condition can cause symptoms such as flushing, nausea, wheezing, and swelling of the face or throat. Unlike many foodborne pathogens, histamine cannot be destroyed by cooking. Some tropical reef fish may also contain ciguatoxin, which causes ciguatera fish poisoning and likewise cannot be eliminated by heat. Shellfish, including oysters and scallops, can accumulate toxins from harmful algae, posing additional risks. To stay safe, purchase seafood from reputable suppliers and keep it properly chilled until preparation.
