The purpose of this paper is to analyse the relationship of the proposed new UNCLOS Implementing Agreement concerning the conservation and sustainable use of marine biological diversity of areas beyond national jurisdiction with the current legal framework concerning fisheries. It elaborates on selected elements that are under negotiations, namely: marine genetic resources, area-based management tools, including marine protected areas, as well as environmental impact assessments. Each of those elements is analyzed with particular emphasis being laid on the following issues. Firstly, how the current legal status quo in the relevant area looks like. Secondly, how the question of fisheries could be included in a future treaty and, thirdly, what bearing it could have on the current framework of the management of fisheries.The article concludes with the identification of possible fields where the new treaty could bring added value. However, some possible challenges are mentioned as well. They relate in particular to the fact that the mandate of negotiations underscores that they shall not ‘undermine existing legal instruments and frameworks and relevant global, regional and sectoral bodies’.