April fool or april fish? Image of fish formed of flowers and foliage.

In many countries, the first day of April is a day to play harmless jokes on family and friends. This usually consists of telling a farfetched story in such a way that it sounds like it could be true. When the other person falls for our joke, we exclaim, “April fool!” and have a laugh.

In France, they play the same sort of jokes, but instead of saying “April fool!” they say, “poisson d’avril!” which translates into “April fish!”. One of the favourite “April fish” jokes among French children is to tape a paper fish to someone’s back without them knowing it.

Why April Fish?

To find out why these jokes are called April fish, we have to go back to 1564 to the time of Charles IX, or Charlie 9 as we like to call him. Up until this time, the New Year in France was celebrated in the spring but there was no fixed date. It could be at different times throughout the country, but in most places the new year began at the end of March or the first of April.

The New Year Starts in Spring

This was a time when people would bring out their spring clothing, get all dressed up, and go out into fields to celebrate the reawakening of nature – the start of a brand new year.

It was customary during these festivities to exchange small gifts, usually food and often fish. Why fish? Maybe it was because the fish is the last sign of the zodiac and the sign for this time of year… Or perhaps because it was during a time when meat was forbidden for religious reasons, so people ate seafood. Whatever the reason, fish was a popular New Year’s gift.

April fool April fish. Cartoon showing two women in sleeveless dresses standing in the snow near a snowman plotting to take his scarf.

The New Year Starts in Winter

When Charlie 9 travelled around his kingdom and saw all of these different dates for the beginning of the year, he wanted to pull his country together. He wanted to get everyone singing Auld Lang Syne (or the French equivalent) on the same date. But the date he chose was the 1st of January. The New Year would no longer be celebrated in the spring, but in the winter.

How Not to Celebrate New Year’s Day

Some of Charlie’s subjects, especially in the rural regions, didn’t hear about the date change or just didn’t want to change their customs and kept their spring celebration.

Others felt obliged to comply with the King’s new rules and moved their merry-making to January. But even though they changed the date of their holiday, they kept their time-honoured traditions. They donned their new lightweight spring wardrobe and went out into the icy fields to commemorate the new year. Since it was freezing cold, it’s no surprise that many of them fell sick and some of them died.

The Old New Year’s Day Becomes a Day of Jokes

Those who survived that first January New Year’s observance probably felt pretty silly about wearing their spring frocks out in the winter and from then on they wore nice warm coats.

Maybe to make themselves feel a bit less foolish, they decided to play tricks on the people who still thought the new year started in the spring. Instead of giving a traditional gift of fish, they would attach a small fish to the back of someone’s clothes with a hook.

These little fish were normally not very fresh and with the clothes of that time being more ample, the fish could go unnoticed for a while. When the person smelled something fishy and finally found the little stinker stuck to his back, someone would announce “It’s a poisson d’avril!” or “It’s an April fish!” and this is why these little jokes are called “April fish”.

April fool or April fish. A medieval man with a small, smelly fish on his back.

Thankfully, the French children today use paper fish and stick them on unsuspecting backs with tape. For the adults, there are “April fish” stories in the media. Just as in the US and UK, the French media likes to print outrageous stories as April Fool’s jokes.

The Annual “April Fish” in Nice, France

The city of Nice has its own special April Fool’s joke. Normally there is a cannon shot every day at noon from a hill overlooking the town. (It’s really a firecracker, but it used to be a cannon so they still call it one. You can read more about it here.)

This noonday boom alerts the people of Nice that it’s lunchtime and it goes off every day at exactly noon. That is, every day except on April 1st when the “cannon” goes off one hour early and everyone is thrown off schedule. If you are in Nice on April 1st listen carefully after the boom and you might be able to hear a shout from the hilltop – “Poisson d’Avril!” (April Fish!)

April Fool or April Fish? In Nice, France, the April Fish joke was fish swimming above the water.
In Nice, France, the city stages a yearly April Fool’s day joke. In 2024, it was the April Fish swimming above the water. They attached 130 silver balloon fish above the fountain. It was beautiful!

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*Get the book – To find out about more holidays and traditions celebrated in France, get my book, French Holidays & Traditions.

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17 responses to “April Fool or April Fish?”

  1. This is a great article! Your research into the April fish custom in France enrich the reader’s understanding of such an interesting country.

    1. Thanks Jay. Isn’t it interesting how something becomes a tradition and people continue to do it for hundreds of years without even knowing why?

  2. Very interesting piece. I loved the images, especially the fish in the rowing boat.

    1. Thank you Derek. You must have seen the article in “The Good Life France”, an online magazine that publishes some of my articles. http://www.thegoodlifefrance.com/april-fools-day-or-april-fish-day-france/ They found some old April 1st postcards to use as illustrations and they are really lovely. The fish in the row boat is my favorite too! Thanks so much for your comment. -Margo

  3. I must have missed the boat image somehow, but at least this bit on the old winter New Year custom helps understand why we say “something smells fishy”- in their case it truly did! Another lovely and interesting post, Margo! Well done and much appreciated.

    1. Thanks Jonelle. The boat image is here: http://www.thegoodlifefrance.com/april-fools-day-or-april-fish-day-france/ The magazine “The Good Life France” publishes some of my articles and they used these wonderful vintage images. It seems that people used to send April 1st cards to each other. I wonder if Hallmark has thought of this?

      1. If not, they can’t be far from it! Any new occasion is a new money maker. Congrats on Good Life- you’re full of surprises!

  4. Great minds think alike. I just prepared a post on the April fish! Great post as usual.

    1. Thanks. I am looking forward to reading yours! In fact, I enjoy all of your posts at http://365thingsiloveaboutfrance.com/
      Keep up the good work! 🙂

      1. Thanks so much Margo! Love your blog too. So well researched and great composition.

  5. Love this. I had no idea of the history of ‘April Fish’; your research is so good and then you write it so well. Thank you very much. Paula

  6. Hi Paula. Thanks for those kind words. I know that a love of history and a love of France are two things that we have in common. 🙂

  7. […] If you would like to know more about the April 1st jokes in France, and why they are called April fish see:  April Fool or April Fish? […]

  8. […] friend, author Margo Lestz, has this tidbit to share on her blog about April […]

  9. […] If you would like to know more about the April 1st jokes in France, and why they are called April fish see:  April Fool or April Fish? […]

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