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Species has a combination of problems such as overfishing, high bycatch, and poor management.
Swordfish – Indian Ocean, LonglineThese fish contain levels of mercury or PCBs that may pose a health risk to adults and children. Our source of information is http://seafood.edf.org/.  We also recommend that you check local advisories.

Swordfish are large, migratory fish found in temperate and tropical waters of the Atlantic, Pacific and Indian Oceans. They grow reasonably fast and mature quickly. In the Indian Ocean, Swordfish are moderately abundant.

Longlines are the most common gear for catching Swordfish worldwide. They result in large quantities of bycatch, including threatened or endangered species such as sea turtles, sharks and seabirds. Management of the Indian Ocean swordfish fisheries is poor and few regulations have been implemented to reduce impacts on non-target species.

When fishing for Swordfish, longlines do not typically contact bottom habitats. However, because these fisheries catch several top-predator species, there is some concern that these fisheries may affect ocean food webs and ecosystems.

Full species report here.

This fish may have high levels of mercury that could pose a health risk to adults and children. More info here about mercury in swordfish. Check out our mercury in seafood section.