Don, this is an unique photo, showing an Arado 196 on board of the "Admiral Sheer". She took part at the operation "Wonderland" in August 1942 in Kara sea and sunk 2 soviet ships.
A part of the operational tasks was to capture enemy ships with any secret information possible.
In the middle part of the photo where the Ar 196 is shown from above,
http://cgi.ebay.de/ws/eBayISAPI.dll?...&rd=1&tc=photo
you can recognise the German Navy flag. So it's not a captured german plane but a trick used in a military mission.
The soviet planes from the period of the WWII don't have stars on the upper surfaces of the wings as here. You can also see the overpainted crosses.
Take a look at the beautifull colour photos of "Admiral Sheer" with her Arado at
http://www.admiralscheer.de/