A large Atlantic fish related to the mackerel, known for its speed and predatory behavior in ocean waters.
From Spanish 'cero,' possibly derived from Latin 'sero' or related to the fish's swift, piercing hunting behavior. The term entered English through maritime and fishing communities in contact with Spanish speakers.
Cero fish can reach speeds of 40+ mph and hunt with such aggression that they've been known to leap completely out of water and snap at objects in a feeding frenzy—making them one of the ocean's most intense hunters.
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