This article presents a preliminary investigation of the way in which sustainability is worked in the aquaculture sector in Mexico, Chile, and Colombia that are part of the Pacific Alliance, since they normally develop activities related to the primary sector, their focus it is oriented to the legal perspective, it is analyzed from legal systems and its link with the United Nations Sustainable Development Goals (UN, SDGs, 2015). As explained in the document, coastal and inland waters where aquaculture takes place deteriorate rapidly due to pollution; despite the coordinated efforts of public, private, and social actors, progress is being made slowly with establishing commitments that allow increasing care for the environment and stopping the harmful effects that this causes. The research was carried out with a qualitative-descriptive approach; the technique used was content analysis to review documents in scientific databases, pages and electronic portals of the Federal Government in the aforementioned countries, which address the central theme from their different perspectives. This tool allows us to identify the trend of aquaculture sustainability at an international level. The United Nations Organization, in accordance with its Sustainable Development Goals, strives to achieve actions of permanent impact in the medium and long term, and to sustainably use the oceans, seas, and marine resources.