DefinitionThis article describes a group of different conditions caused by eating contaminated fish and seafood. The most common of these are Ciguatera poisoning, Scombroid poisoning, and various shellfish poisonings.This is for information only and not for use in the treatment or management of an actual poison exposure. If you have an exposure, you should call your local emergency number (such as 911) or the National Poison Control Center at 1-800-222-1222.Alternative NamesFish poisoning; Dinoflagellate poisoning; Seafood contamination; Paralytic shellfish poisoning; Ciguatera poisoningPoisonous IngredientIn Ciguatera poisoning, the poisonous ingredient is ciguatoxin. This is a poison made in small amounts by certain algae and algae-like organisms called dinoflagellates. Small fish that e