Here in Brussels a few years ago, it was found that 1 in 3 kinds of fish that was served in restaurants did not match the type of fish on the menu.
150 restaurants were visited, 5 types of fish were ordered and 36 different types were served (lots of Pangasius). In 95% of cases, "red tuna" was actually white or some other kind of tuna.
Here in Brussels a few years ago, it was found that 1 in 3 kinds of fish that was served in restaurants did not match the type of fish on the menu.
150 restaurants were visited, 5 types of fish were ordered and 36 different types were served (lots of Pangasius). In 95% of cases, "red tuna" was actually white or some other kind of tuna.
Source (in Dutch) https://weekend.knack.be/lifestyle/culinair/een-op-drie-viss...