This mosaic female has a lot of qualities I like in terms of making a line where the focus is on the females instead of the males. The dorsal could stand to be longer. But she has a good size caudal with great color and pattern.
Below is a female that appeared from my pintail line. I don’t remember the mother of this daughter looking anything like this. But her brothers are pintails so I know it’s not totally unrelated. These females have a hunched back which isn’t particularly flattering.
High dorsal flametail.
I’m starting to think I could use some of these AOCs in a yellow line!
Terry Aley's Guppy Site 
The shape of your pintail female is typical of many. Often seen in conjunction with Elongatus trait.
Ok good! I was worried someone pulled a switcheroo and gave me the wrong females for the line! 🙂