The snake mackerel (family Gempylidae, notably the species Gempylus serpens) is a slender, predatory fish found in tropical and subtropical oceans worldwide, recognized for its elongated body and sharp teeth. This species inhabits deep offshore waters and is often caught as bycatch in pelagic longline fisheries targeting tuna and swordfish. The primary countries harvesting snake mackerel include Japan, Taiwan, Spain, Portugal, and several Southeast Asian nations, where it is processed for food or used as bait. While not a major commercial target due to its oily flesh and occasional association with foodborne illness (due to high wax ester content), snake mackerel supports small-scale and artisanal fisheries in these regions and contributes to the overall deep-sea fishery catch.
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Data from FAO. 2025. Global Capture Production. In: Fisheries and Aquaculture.