Final answer:
The food commonly linked to Ciguatoxin is predatory reef fish.
Step-by-step explanation:
The food commonly linked to Ciguatoxin is Predatory reef fish. Ciguatoxin is a substance that can be found in certain types of seafood, particularly predatory reef fish, due to the bioaccumulation of toxins in their bodies. These toxins, such as mercury and PCBs, can be harmful to humans if consumed in large amounts.