This Order regulates acclimatization arrangements and transfer of aquatic biological resources into fishing waterbodies carried out by natural and legal persons. Acclimatization of new fauna species shall be carried out exclusively by the authorization of the Federal Veterinary and Phytosanitary Service. Biological substantiation shall be elaborated prior to carrying out the acclimatization arrangements. Biological substantiation shall be elaborated in accordance with the following scheme: (a) a