Eight big fishing companies, which combined catch more than 40 times Australia's total seafood production, have signed a joint agreement to crack down on illegal fishing, improve traceability and cut down on greenhouse gas emissions.
The companies also said they would address antibiotic use in aquaculture and plastic pollution.
Meeting in Sweden recently, the companies agreed to use more cutting edge technology, including DNA barcoding and satellite surveillance to monitor the volume and types of fish species they catch.
The companies account for 15 per cent of the total global catch.
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