Chinese tuna fisheries are expanding into the European Union (E.U.) market, growing from a 9% to 24% share of the bloc's tuna purchases between 2015 and 2022, at the expense of Ecuador. Chinese tuna is sold at a lower price, around USD 1,200 (EUR 1,092) less per metric ton than Ecuadorian tuna. China's success in the E.U. market is attributed to its use of the bloc's autonomous tariff quota (ATQ) system, which allows for reduced duties on certain fishery products. This shift has caused concern among E.U. tuna producers, who argue that they cannot compete with the subsidized Chinese industry and are frustrated by the lack of labeling transparency, which they claim makes it difficult for consumers to identify the origin of tuna in canned products.