What part of the bluefin fish is the fatty tuna part?

Question

My coworker caught fresh bluefin fish and gave part of the fish to me and I dunno what part is the fatty (toro) part. I got a whole half side of the fish. Please let me know.

Answer 1

The fatty (toro) part is the belly, it's the most tender part of the fish. Great for sashimi or a belly soup.