2. In France a long time ago, they used to have new years eve on the first of April. but unfortunately one day king Charles the 9th made new years day on January the 1st . The French wanted to keep giving presents on April the 1st and they did but the gave fake present, and they played tricks, by putting paper fish on people’s back’s. that is were the fish tradition came from and April fools started.
3. In catholic religion, Easter is the end of lent (le careme), when it is prohibited to eat meat, so people eat fish, which was common present in the old days. this is where the fake fish tradition comes from!