EBJD male vs female.

[Arleta]

What are visible differences between the male and female EBJD? And at what age we can notice them?

My pair of dempsies is less then one year old. Can i already determine their gender?
Can you guys tell if dempsies below are male or female:
Fish nr1
View attachment 1063664

Fish nr2
View attachment 1063666

Thank you for any tips.

 

[Rivers2k]

I have read but I don't know how accurate it is that the mutation that causes ebjds a majority of the time only happens in males. so most of the time EBJD's are male. I do know that there are no visible way to tell other than venting.