Question: Ciguatera is caused by eating reef fish that contain toxins known as ciguatoxins. Which specific parts of these fish contain the highest concentrations of ciguatoxins?
Answer: The cited reference notes that the parts of reef fish containing the highest concentration of ciguatoxins are the head and viscera. (Chan TYK. 2016 A, J Trop Med Hyg. 94(4):704-709)
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