Sushi lovers take note: bluefin tuna could soon be off the menu. The European Commission has provisionally backed a ban on fishing for Atlantic bluefin. It is supporting a proposal by the Principality of Monaco to list the species under the Convention on International Trade in Endangered Species (CITES) next March.Chronically overfished for years, bluefin tuna commands sky-high prices in Asia, especially in Japan. One fish can sell for around a 700 euros. But the EU will not fully commit until its 27 member countries have been consulted this September 21, or before new scientific data emerges in November. The EU quota on bluefin can be filled in two days of fishing, and last year the Commission accused France and Italy of fishing more than their share.