The Hispano-Roman city of Baelo Claudia, located in the Strait of Gibraltar (Baetica, conventus gaditanus) is possibly the best-known urban halieutic environment in the Atlantic-Mediterranean area. From the year 2021, new studies have been developed in the easternmost part of its fishing-canning district, having proceeded to the delimitation of at least four large new buildings, two clearly associated with fishing-canning activity (Cetaria XV and Cetaria XVII) and two other facilities of undetermined functionality (Southern Building XIV with basins lined with opus signinum, which confirm the relationship with artisanal activities; and the Southern Building XVI, in whose last phase the halieutic activity has been verified). This paper presents for the first time the topographical and architectural problems of these buildings, the ceramic contexts associated with their development phases and the preliminary problems of the marine resources processed in these area of the archaeological site.