; (2) used for noncommercial subsistence purposes in accordance with State or territorial law; (3) used solely for display or research purposes by a museum, college, or university, or other person under a State or Federal permit to conduct noncommercial scientific research; or (4) retained by the license or permit holder for a noncommercial purpose. 5. Dogfish (a) In general It shall not be a violation of section 3 for any person to possess, transport, offer for sale, sell, or purchase any fresh or frozen raw fin or tail from any stock of the species Mustelus canis (smooth dogfish) or Squalus acanthias (spiny dogfish). (b) Report By not later than January 1, 2027, the Secretary of Commerce shall review the exemption contained in subsection (a) and shall prepare and submit to Congress a report that includes a recommendation on whether the exemption contained in subsection (a) should continue or be terminated. In preparing such report and making such recommendation, the Secretary shall analyze factors including— (1) the economic viability of dogfish fisheries with and without the continuation of the exemption; (2) the impact to ocean ecosystems of continuing or terminating the exemption; (3) the impact on enforcement of the ban contained in section 3 caused by the exemption; and (4) the impact of the exemption on shark conservation. 6. Definition of shark fin In this Act, the term shark fin means— (1) the raw or dried or otherwise processed detached fin of a shark