Isn't Yazi the son of the Dragon King? Why is it a glowing fish after changing back to its original shape?

The statement that Artistry is the son of the Dragon King is not a formal legend or myth, and we can't be sure. However, the story that the pelican turned back into a glowing fish may be based on some legends or fictional storylines.

In some legends, the dragon king may incarnate in different forms, including fish or other aquatic creatures. This may be to emphasize the characteristics of the Dragon King as a water god, or to reflect its changeable image. Therefore, it may be described as a fish in some cases.

However, these statements are not authoritative, and different cultures and traditions may have different interpretations and opinions.