dubia roaches, young male & female

I have just bought 50 roaches hopeing to breed them, but I think they could all be female I was told they will be 10mm+ but they have come through 25/30mm long ! Are these still young & devolope wings soon ?

I think that at the size of 30mm its very close to find out if you have any males in the colony.
With my colony i find that anywhere between 30mm-40mm the males get there wings.
When I first got my colony I too thought that I only had females but after a month or so I had 4 males.
Good luck with breeding them. They soon will be EVERYWHERE!!!!!! LOL

Thank you.
I dont want them everywhere
Just in the box will be fine lol

No problem. Once you get them up and breeding its crazy how fast the multiply.