I don’t know the genetics of the female although I know that the male is normal. Usually leopard geckos have four or five bands on the tail and they fade as the gecko matures. Some geckos have different banding/striping, but they are different morphs. But usually they are more pronounced than this. So I don’t know if it’s a specific genetic trait or if it’s just something this individual happened to have and it doesn’t mean he’s any specific morph.
It's most likely (IMO) just a random "nothing" but not sure anyone can say for sure. See what others w/ more Leo experience have to say though?
Rudeness is the weak man's imitation of strength. Eric Hoffer(1902 - 1983)