See What Cheaper Fish Some Restaurants Serve For Grouper, Cod and Catfish

[cab67]

12. this is also not unique to fish

DNA-based surveys of whale meat sold in parts of Asia showed that it was very often not the species it was supposed to be. In fact, it wasn't always even whale - it was sometimes sheep or horse. These countries are allowed to use beached whale carcasses (if they're fresh enough), so it isn't necessarily evidence that whaling fleets are killing protected species, but it does call for extra monitoring.

The same is true for caviar. The species on the label is not always the species in the jar. It could be paddlefish (related to sturgeon, but not sturgeon), or it could be a very endangered species of sturgeon from central Asia.