a parasite, such as a flea, that lives on the outside of its host.
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mahika61
Ectoparasites are parasites that live on the external surface of hosts, for example fleas and lice of various terrestrial vertebrates, and Monogenea and Copepoda of freshwater and marine fishes.
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Answer:
a parasite, such as a flea, that lives on the outside of its host.