Pope Gregory XIII standardized January 1 as the commencement of the calendar year across the entire Christian realm through the adoption of the Gregorian calendar in 1582. It could be speculated that those who continued to recognize April 1 as the start of the new year, rather than January 1, were the individuals targeted as "April Fools," thereby becoming subject to pranks. However, references to "poisson d'avril" precede the 1564 edict, appearing in print as early as 1466, which refutes this explanation.
Another plausible theory involves literal fishing. As daylight extends in the northern hemisphere during spring, the onset of spring also signifies the commencement of the fishing season in France, typically around the first day of April. Some suggest that the prank of presenting a fish was intended to mock fishermen who, at this time, either lacked fish or experienced an extraordinary abundance. They would either need to wait for spawning fish to reach legal size before catching them or, once the time arrived, contend with an overwhelming rush of fish migrating upstream. According to this theory, actual herrings were the initial sea creatures of choice for the prank, with the trick being to affix a dead herring to a fisherman's back and observe how long it took for them to notice, as the fish gradually emitted a foul odor throughout the day.
The tradition of "poisson d'avril" took a different direction in the early 20th century when friends and loved ones exchanged decorative postcards adorned with elaborate fish imagery. The majority of these cards featured amusing rhymes that were often flirtatious and suggestive but presented in a humourous manner. While most cards depicted young women, flowers, and fish, occasional references to the ocean, other marine creatures, and advancements in technology such as airplanes and automobiles could also be found. Pierre Ickowicz, the chief curator of the Château de Dieppe Museum in Normandy, which houses a significant collection of these cards, notes that the tradition of exchanging cards seemed to fade shortly after World War I. The museum's collection comprises 1,716 postcards.
Poisson dâavril postcards from the 1920s and â30s were full of flirtation and fish. WELLCOME COLLECTION/PUBLIC DOMAIN; FOTOTECA GILARDI/GETTY IMAGES
In modern-day France, the primary participants in "poisson d'avril" are typically schoolchildren, who take pleasure in affixing paper fish to the backs of their siblings, classmates, and educators. While the methods of execution have evolved over time, ranging from using dead herrings as accessories to exchanging postcards to the current practice of paper fish, the mischievous spirit of the tradition has remained constant.
Jack Santino reflects on this tradition, stating, "The concept of playing pranks on others might seem bothersome if it weren't socially sanctioned on certain occasions." He suggests that periods of transition often coincide with rites of passage during which societal norms can be temporarily disregarded. "If 'poisson d'avril' is associated with the arrival of spring," Santino suggests, "I would interpret it as a celebratory transition into a new phase of time, where part of the celebration involves engaging in activities typically deemed unacceptable."
Today, the celebration of "poisson d'avril" extends beyond France, with observances also found in neighbouring Italy and in Quebec, Canada, a former colony of France. Although its exact origins remain elusive, the tradition of the fish endures. Whether or not one chooses to partake in trickster behavior on April 1st, there is undoubtedly a collective sense of relief that the practice no longer involves the use of actual, malodorous fishâa historical aspect that, hopefully, doesn't inspire any mischievous ideas.
via atlasobscura