Good Fish Guide

Swordfish

(Xiphias gladius)

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Some sources of this species are more sustainable than others. View ratings.

Overview

Swordfish is the only member of the family Xiphiidae. It is a highly migratory species, moving towards temperate or cold waters in summer to feed and returning to warmer waters to spawn. They are apex predators that feed opportunistically. Squids and fishes are major prey items. In the Atlantic, spawning takes place in spring in the southern Sargasso Sea. In the Pacific, spawning occurs during spring and summer, and in the Mediterranean between June-August. Usually solitary, it forms large schools during spawning. A fast growing fish, northern hemisphere swordfish begin to mature at two years of age, when they are about 150 to 170 cm in length, and by age four all are mature. In the South-West Pacific Ocean however, age at maturity is much later at about 10years for females (1-2yr for males).They can attain a maximum size of 4.5m and a weight of 650kg. Swordfish tolerate temperatures of about 5 to 27C, but their optimum range is about 18 to 22C, and larvae have been found only at temperatures exceeding 24C.

Ratings

Showing 13 results for Swordfish

Best Choice

Rated 1-2
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OK - Needs Improvement

Rated 3-4
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Avoid

Rated 5
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5

Wild-caught

Location: All areas

Method: Net (gill or fixed)

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5

Wild-caught

Location: All areas

Method: Net (gill or fixed)

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Under review

Ratings that are Under Review
Showing 11 of 13 results
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Wild-caught

Location: All areas

Method: Hook & line (longline)

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Wild-caught

Location: All areas

Method: Harpoon

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Wild-caught

Location: All areas

Method: Hook & line (longline)

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Wild-caught

Location: All areas

Method: Hook & line (longline)

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Wild-caught

Location: All areas

Method: Hook & line (longline)

More info
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Wild-caught

Location: Certified fleets only

Method: Hook & line (longline)

Certification: Marine Stewardship Council (MSC)

More info
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Wild-caught

Location: All areas

Method: Hook & line (longline)

More info
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Wild-caught

Location: All areas

Method: Hook & line (longline)

More info
?

Wild-caught

Location: Certified fleets only

Method: Hook & line (longline)

Certification: Marine Stewardship Council (MSC)

More info
?

Wild-caught

Location: All areas

Method: Hook & line (longline)

More info
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Wild-caught

Location: All areas

Method: Hook & line (longline)

More info
Also known as

Swordfish

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