Places near the ocean usually have fish markets and wife is an old time usage to mean woman
I don't live near the ocean but we have a fish stand at my work (check : "Carrefour Salaise-sur-Sanne, 38150) then you might see my work, haha !!
And for the wife term, well it's always fun to know the history !!
Gives me the image of a trout in a veil
I can give you an picture of me dressed as a fish monger (dressed to kill)