Illex

mollusk genus

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Last updated

June 29, 2026

Quick Summary

The genus Illex refers to a group of squid, which are marine cephalopods with 10 arms, found in both coastal and oceanic waters. These squid have elongated bodies and short heads, with two specialized tentacles used for capturing prey.1

Illex species are carnivorous, feeding on young mackerel and other small marine life. They also serve as a food source for larger animals, including sperm whales and humans. Like other cephalopods, squids possess complex eyes and can change their skin color for camouflage or communication. Some Illex species migrate to shallow waters during breeding seasons.123

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cephalopod
Ecology
…food cycle of the squid Illex, in which the adults feed upon young mackerel and the adult mackerel feed upon young squid. Squids also are cannibalistic. Octopus feeds upon bivalve mollusks and on decapod crustaceans, sometimes causing severe losses to the lobster fishery by entering the traps and eating the…
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…food cycle of the squid Illex, in which the adults feed upon young mackerel and the adult mackerel feed upon young squid. Squids also are cannibalistic. Octopus feeds upon bivalve mollusks and on decapod crustaceans, sometimes causing severe losses to the lobster fishery by entering the traps and eating the…
Read More