Venustus sexting?

[Arrowanas]

I got a Venustus in my 55g grow out tank and wondering if it’s possible you can sex them as juveniles. I did some research but still am kind of confused. Hoping some experts on here can help!

 

[SixThreeOh]

They look a bit young to be sexting.

 

[A201]

I agree, a bit young for positive gender ID. Just an educated guess,
"Female".
Rounded dorsal & anal fins are female traits, but things can change as the Venustus matures.

 

[kristyjackson]

Observed for a couple of days or weeks, if it's heads turns blue, then it's a male.