evidence of marriage during interview

good day ,

to all persons who are married and has already been interviewed in the embassy. what evidence do i have to show to the consul that i am married beside the marriage certificate. do i have to show pictures of my wife together? is it required that we should have a joint account? i ask these questions because me and my wife do not live together. my wife and my son live with her parents while i am living with my mother. therefore, we do not have joint account and we dont have that many picture for the both of us. thank you.. hope you would share your insights. thank you. God Bless