I have a feeling
that this fish may be female. However, I am crap at sexing my bettas until they are full size so I thought I would get some other opinions. It would have to be around 2.5-3 months old at this point if that is of assistance. I will be sad if it turns out to be male though. I don't know how to get my spawns more balanced sex wise. All of mine seem to be very male skewed. Think maybe it is the temperature as it is quite high for these species.
Here are two photos of the unknown juvenile
This is a photo of mum for comparison
This is a photo of dad for comparison