waterwild

Hi all, I'm just a little worried my krebs have had fry : , only five survived , when do I take the little ones out of the tank, it seems as if dad storms them now and again, Mom is reat with them, they are swimming all over th tank and seem very content, I don't want to bother them but as I said dad seems to be a little pain at the moment ?? Please help this is my first time breeding Krebs.So any help can only be good help. Thanks