During the Medieval period, the average middle-class kitchen often had a long, leather “trough” where they stored LIVE fish.
The fishmongers would come down from the mountains streams with their recent catches, still alive, and housewives would buy them to replenish their kitchen “aquarium.”
Wow. Never heard that one!
Very believable, though. People can at times get pretty ingenious!
Thomas Jefferson had a small artificial pond he used for the same purpose.