Additional reporting from Louis Harkell 

The introduction of an additional 10% -- or potentially even 25% -- tariff on seafood imports from China, threatened by US president Donald Trump, would kill the trade between the two countries on tuna, industry sources in Asia and the US told Undercurrent News.

However, additional tariffs are unlikely to cause an increase in prices in the North American market, as others will step in to fill the gap, sources said [...]