The trade of freshwater fish to the Middle Ages attempts to put very fresh fish on sale. In Paris, for example, in halls and markets, the "regrattières" [1] spread out their fish in buckets they had in front of them, where the alive fish swam and preserved itself. These animals could come wholesalers conveying them in boats whose medium in the shape of tank (shops) were bored holes. Storage in shop was a good means to keep freshwater fish alive. Facilities of conservation of freshwater (...)