When small fish with large mouths take lures their own length I don’t think you can put an actual size on them.
A metre Barra, Murray Cod, Mulloway etc would have no difficulty taking 3lb or 4lb fish & larger, making a 160mm lures a light snack.
Very few luremakers actually make lures the size proportionate to what many species will realistically take.
I personally look at the make-up of targeted species & take into consideration mouth size. If it will fit they’ll try & eat it.
Selecting lures to suit can be from tiny to enormous.
Is there such a thing as too big for larger species? What natural prey would an 8ft yellowfin or 12ft marlin eat?
Just my thoughts.