Considering we are dealing with a story of more than two thousand years of history we can expect many variations and it seems every writer with five minutes of time to spare made his or her own variation. Some of the tales spend a lot of time on introduction, we hear more about the merchant (and in some cases his wife) and especially we are informed about the enchanted prince who was transformed into the Beast in more detail.
Merchant's family was not formed of daughters only. In older versions, we are dealing with six brothers and six sisters altogether. Yet, the Beauty is always called the same and she is always the youngest. And, by the way, she doesn't have a real name. She is rather called by some specific characteristic, like Snow White, Red Cap, Goose Girl, etc.
The look and the character of the Beast are changing from version to version as well. His look is sometimes resembling an elephant, sometimes a snake, sometimes a bear, a pig, ... In most cases, illustrators have their own interpretations of the Beast. In older versions, he is not handicapped by his look only. He is far from being smart and charming as he becomes later.
This tradition of changing his behavior is still alive. In the animated movie by Disney, he has problems with fits of bad temper, for instance, what is in tune with one of the most popular interpretations: The Beauty and the Beast is a story of cultivating and civilization.