According to researchers, stocks of Atlantic bluefin have fallen by over 80 per cent in the last 40 years. Around 3.2m remain of the fish, which is mainly used for making sushi.
Several member states that initially opposed a ban, such as Spain, Italy, France and Greece, are now in support. Only Malta voted against it, while Austria and Sweden abstained.
A number of conditions have been attached to the proposal, however, such as a one-year delay on a ban following endangered listing, an opt-out for small scale artisanal fishermen, and consideration of financial compensation.
The Convention on International Trade in Endangered Species (CITES) meeting, at which bluefin tuna is expected to be placed on the endangered species list, will take place from 13 to 25 March.