Go watch again 
The rear of the cockpit was the giveaway for me. Not an Arado although it would be an easy mistake to make
Yep. The canopy is a serious distinction. I looked at some other photographs of the Arado and it has the distinctive Arado vertical stabilizer and rudder shape which of course in not present in the movie.
It's pretty close to the P2 from the spinner to the windscreen tho!

Nice ID on that one Guppy!