Translation guide
The fish species Thunnus orientalis, commonly referred to in Japanese as クロマグロ (kuromaguro) or ホンマグロ (honmaguro).
Pacific bluefin tuna (as a species)
Pacific bluefin tuna (as food, high quality)
Often used on menus.
Referring to the Pacific bluefin tuna as a species, in general contexts.
The most common and standard term for Pacific bluefin tuna in Japanese. Used in everyday conversation, menus, and scientific contexts.
Pacific bluefin tuna is a high-class fish.
Literally 'true tuna', often used to distinguish bluefin from other tuna species. Common in fishing and culinary contexts.
This sushi uses Pacific bluefin tuna.
Full scientific/common name including 'Pacific'. Used in formal or academic contexts.
The resource management of Pacific bluefin tuna is being discussed.
Referring to the meat of the Pacific bluefin tuna, especially in culinary settings.
Generic term for tuna, but in context (especially at sushi restaurants) it often implies bluefin. If you want to be specific, you can say クロマグロ.
I'll have tuna sashimi, please.
Often written with the kanji 本, emphasizing it's 'real' bluefin tuna, used on menus to indicate high quality.
In many everyday situations, especially when ordering sushi, simply saying マグロ is understood as bluefin tuna because it's the most prized. However, if you want to be precise, use クロマグロ or 本マグロ.
クロマグロ (Pacific bluefin) is distinct from ミナミマグロ (Southern bluefin tuna). Both are highly valued, but クロマグロ is more common in Japan.
本マグロの中トロは絶品です。
The medium-fatty bluefin tuna is exquisite.