Fish

But they're not the only ones who have been ordered to get tested: an official notice states that some forms of sealife are also expected to join the latest mass-testing drive.

In recent weeks, Xiamen's Jimei Maritime Pandemic Control district committee issued a notice saying that when fishermen return to their ports "both fishermen and their seafood must be tested".

According to the monthly economic review released by the National Reserve Bank of Tonga, agricultural export volumes increased by 330.4 tonnes, more than double the volume in March.

Yams made up majority of the exports with 270.6 tonnes.

Fish exports averaged around 188 tonnes per month since the beginning of 2019 compared to an averare of 67.2 tonnes for the same period in 2018.

Majority of the fish exported are tuna with a total of 164 tonnes exported in April 2019.

There has also been a 97% increase in the export of aquarium products.

Radio Tonga reports other seafood are exempted from the limitation.

Dr. Tuikolongahau Halafihi, the CEO of the Fisheries Department says passengers can take up to 20 kilograms of seafood, but they must be prepared to face the risk.

He adds the department and other related sectors will confirm the specific requirement on the issue.

Some members of the public are still confused over the requirements of fish and seafood taken by passengers to Australia.