Added prefab in scene view when game is played it is not shown as it is reset to (0,0,0)

You haven't supplied enough information to assist anyone in working on the problem with you.

Details, details! As far as I can tell, this is one of those animation problems that people ask about around 3 times a day. Is the object animated? Are you specifying the start position in your call to 'Instantiate'?

How are you instantiating the prefab? Here is a link to different methods, some of which influence where the prefab is created.

http://unity3d.com/support/documentation/ScriptReference/Object.Instantiate.html

show some script on this please if you are instantiateing and add more detail to your problem. is this a script you copied from a tutoral or onr you created.

This most definitely sounds like a Blender import problem, like sycla said.