A joint investigation by Roskachestvo, Rosselkhoznadzor, and Rosrybolovstvo has uncovered fraud and counterfeit sturgeon caviar in the Russian market, with some manufacturers repackaging foreign caviar as Russian and cutting costs by using preservatives like sodium tetraborate. The investigation, prompted by concerns over the quality and origin of caviar, highlighted the challenge of distinguishing counterfeit caviar from the real one. The primary sources of the counterfeit caviar were identified as China and Uruguay, with some also originating from legal imports that are then resold illegally. The investigation involved purchasing and testing 16 brands of caviar, leading to the discovery of these fraudulent practices and raising questions about the safety and authenticity of the caviar available in the Russian market.