Large migratory fish is a term that has its origin in the UN Convention on the Law of the Sea. It refers to fish species that migrate marineally and also have a wide geographical distribution and generally refers to tuna and tuna, sharks, marlins and swordfish. Straddling fish stocks are particularly vulnerable to overfishing due to ineffective management systems and non-compliance with fishing interests. The agreement strives to achieve this goal by establishing a framework for cooperation in the conservation and management of these resources. It promotes good governance in the oceans through effective management and conservation of offshore resources, including setting detailed minimum international standards for the conservation and management of straddling fish stocks and large migratory fish stocks; Ensure that conservation and management measures for these stocks are compatible and consistent in areas under national jurisdiction and on the adjacent high seas; Ensure that effective mechanisms are in place to ensure compliance and implementation of these measures on the high seas; and recognising the specific conservation and management requirements of developing countries, as well as development and participation in fisheries for the two types of stocks mentioned above. The Territorial Fisheries Convention () is a multilateral treaty concluded by the United Nations to improve the cooperative management of large fishing areas that cover large areas. and are of economic and ecological interest to a number of nations. In December 2016, the treaty was ratified by 91 parties, comprising 90 states and the European Union.  Straddling stocks are stocks of fish that cross or are located in more than one exclusive economic zone.
The agreement was adopted in 1995 and came into force in 2001.  The agreement was adopted on 4 August 1995 by the United Nations Conference on Straddling and Large Migratory Fish Stocks and opened for signature on 4 December 1995. It was ready for signature until 4 December 1996 and was signed by 59 states and institutions. FAO Code of Conduct for Responsible Fisheries (1 November 1995) United Nations Conference on Straddling and Large Migratory Fish Stocks (1993-1995) The conditions for entry into force of the agreement were met on 11 November 2001, when the Maltese Minister of Foreign Affairs tabled an instrument for the agreement with the Secretary-General. The instrument was the thirtieth instrument of ratification or accession tabled. The agreement entered into force on 11 December 2001, 30 days after the tabling of the 30th instrument of ratification or accession, in accordance with Article 40, paragraph 1, of the agreement.