Look at the "exceptions" in bold in one of my postings above. The possesion limit (in your freezer) is 10 fish, since while the TFF may have a 2-fish bag limit, other lakes in the vicinity may have a 5-fish limit. There's no way to identify what lake your filets came from.
While you're on the water, and fishing, the 2-fish limit applies.
HRG