I'm not sure where you got this information, but it is incorrect. Corrected for digestibility, it is not ideal, but is still complete: https://en.wikipedia.org/wiki/Complete_protein

Umm... How did Polynesians survive with their fish filled lentil free diet? I guess greens? I think your info is wrong.

Polynesians ate pig. They took pigs with them wherever they went. (Yes, even on long ocean voyages.)

I'm not arguing for or against the quality of fish protein, just pointing out Polynesians had pigs...

Downvotes seem to be accurate. My sources (some time ago) seem to have misinformed me.

Why?