Males are supposed to have red/orange on the upper and lower margins of their tail fins. I have not kept any pink skunk paris so I don't know if ALL males have the red magins. I also don't know if a male with the red margins would lose them once they become female.
Very often in wild caught "mated" pairs, the larger fish has the red magins on the tail. I have always assumed that meant it wasn't really a mated pair, but just two fish from the same anemone, or just two fish randomly put together.
It is not unusual for males in the clarki, tomato and skunk complexes to be nearly the size of the female, which can be quite large.