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Which class of animals include all ectoparasites on some fishes ?
Option: 1
Amphibia
Option: 2
Osteichthyes
Option: 3
Cyclastomata
Option: 4
Reptilia
Answers (1)
As we have learned
Class Cyclostomata -
All are ectoparasites on some fishes. Mouth is circular and jawless. Head and brain poorly developed.
- wherein
Eg. Petromyzon, Myxine.
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