Are these praecox rainbows too young to tell gender, or all females?

[Niccobacci11]

Had these fish for only a week, first time having rainbows. They are all about 1.5” long. I hear they take a bit to color up, do I just need to wait a little longer for them to show gender? Kinda look all like females right now.

 

[myo]

Pretty sure all female.

 

[Niccobacci11]

[emoji53]dern guess it’s an excuse for more they are still awesome to watch, thank you such a fast answer.

 

[myo]

Males have really defined red fins and females are really yellow.