Under the plans the fish would be listed as an endangered species in the Convention on International Trade in Endangered Species (Cites), temporarily suspending trade in the species, which fetches high sums in its main market Japan.

The plan to allow the bluefin tuna a chance to recover was originally put forward by Monaco in July at the International Commission for the Conservation of Atlantic Tunas (ICCAT), and has been backed by a number of European governments including the UK.

Celebrities including Stephen Fry, Joanna Lumley and Elle MacPherson have also lent support to efforts to save the huge predatory fish, writing to Jose Manuel Barroso, European Commission president, to urge backing for the ban.

Tony Long, director of WWF’s European policy office in Brussels, said the commission had made “the right choice leading the EU to heed urgent scientific advice that Atlantic bluefin tuna is dangerously close to collapse” and needed a break from the trade to survive.

“Some EU member states have already joined the call to temporarily ban international trade in Atlantic bluefin - and WWF now urges other countries to follow the European Commission’s lead and back the trade suspension,” he said.

Willie Mackenzie, of Greenpeace, said: “Bluefin tuna populations have fallen to critically low levels. And it has become endangered because of disgraceful fisheries management in the EU.

“But today’s move doesn’t mean that this fish is saved yet. Member states still need to agree to support this ban, and follow the lead of countries like the UK.

“Anyone who is opposed to the proposed trade ban is clearly putting short-term commercial interests above the survival of the species, and the future of the fishing industry.”

A spokesman for the Department for Environment, Food and Rural Affairs said: “It is great news that the commission is showing its support for the proposal to give bluefin tuna the highest form of protection, which the UK is backing strongly.

“We will be speaking to other member states to get their agreement to back Monaco’s proposal too.”

The EU will vote on the ban as a bloc at Cites, whose next meeting is in Doha, Qatar, in March.