I can't answer your question regarding puppy food but I thought I'd mention that I fed my then 5 year old GSD the 6 fish and it was too rich for him. We do much better on the regional red. I buy the Orijen in the biggest bags they come in and once in a while I'll also buy the 5lb (?) bag of the 6 fish just to give him a change.
I've fed my dog all 3 versions of the orijen and they all treat her about the same. No problems with anything being too rich. We've been feeding her this since she was 9 or 10 months old. I have read that any of them could be too rich for a young puppy, but you don't know till you try. This article may help you decide: Orijen Review