I haven't kept a Sax/Lepidota where the females have the black dots in the white dorsal stripe, but, ALL Sveni females that I have ever kept do have them. . . Just food for thought
I just saw pics from Felipe in Uruguay, he has a female with the spots. . . I was wrong on that part, but, I am sticking with my Sveni ID, I have had many pairs with light markings just like this one. . .