Which? has asked retailers to give more information on packs of fish to help shoppers identify if the fish they are purchasing is sustainable.
The European Commission requires that whole or filleted fish must be labelled by its commercial name, whether it is farmed or wild and the area in which it was caught.
However, the rule currently does not insist that the catch method or the specific catch area needs to be included.
Which? accused retailers and brands of labelling tinned tuna ‘Dolphin friendly’ even though this information is usually irrelevant.
“Most tinned tuna is Skipjack tuna, which don’t swim with dolphins.
“Although labelling has improved since we last looked at fish sustainability two years ago, some products still didn’t allow consumers to make sustainable choices.
“We would like retailers and brands to use consistent and reliable certification schemes, such as the Marine Stewardship Council and the recently launched Aquaculture Stewardship Council scheme for farmed fish.”
The survey also found that over three-quarters of 1,995 adult UK consumers who took part in February said they wanted to know if their fish was sustainably caught.