 DNA analysis confirmed a hybrid between "C. sexfasciatus" and "C. melampygus", which has been difficult to explain due to the two species vastly different lifestyles and spawning characteristics.As all fish species, the bigeye trevally harbours parasites.These include Monogeneans, Digeneans, Acanthocephalans, Nematodes, Copepodes, and Isopodes; of these, the protomicrocotylid monogenean "Neomicrocotyle pacifica" is the more abundant.