Ciguatera vectors are mainly from tropical and intertropical  ecosystems. Most of them are species that inhabit coral reefs. Note that some pelagic species, such as the Atlantic mackerel, can also transmit Ciguatera.

To date, about 400 fish species have been associated to CP events.

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BY DEFINITION, ANY FISH THAT HAS BEEN EXPOSED TO TOXIC MICRO-ALGAE EFFLORESCENCE, OR HAS INGESTED OTHER ORGANISMS THEMSELVES CONTAMINATED BY CIGUATOXINS, MUST BE CONSIDERED AS A POTENTIAL VECTOR OF CIGUATERA.

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The species responsible for CP vary from a region to another, but some families are more at risk than others: