They are still quite young, about 5 months old. Could the green stripe come later on?

Thanks for your reply. You are probably right. Sad though, I really wanted green stripe.

I just bought 10 corydoras and I would like some help from you. I'm not sure whether they are green stripe or yellow stripe. The seller said they were green stripe but I dont't see much green in them... The seller had both green and yellow stripe.

Thanks