What To Do With 7 Weeks Old Kribs?

[Dunkal]

I have about 25-30 7 week old Krib fry and 6 cherry barbs in a 70 litre tank at the moment. The Fry are still small and some are growing quicker than others. I might want to keep a female and a male. Would these siblings perhaps breed again?
Is it possible to distinguish between the males and females? some are lighter than othere so I wondered if the darker ones were the male??
I would probably sell the others if anyone is interested.

Thanks

 

[kribensis12]

Yes they'll breed with borthers and sisters. Can you post pic's? i would love to try and sex them for you!

 

[Dunkal]

Sorry, My camera doesnt take very good pics.

 

[kribensis12]

Thats okay mine dosent either.