As a masters student calling wife on family reunion(spouse) visa:: do we have to show some extra documents and which? any sort of block account also or ?
For family reunion visa your wife has to show German Language Certificate of A1 and all the other requirements specified on the German Embassy in Pakistan website.
Furthermore, you have to show that you are able to support your family without the assistance of public funds. In some cases, you have to block the amount for your wife. I think 1-year expense i.e 8000 euro.
You can read about it in the below link in more detail: