noun
red-fleshed fish
Refers to fish with dark red flesh, such as tuna, bonito, mackerel, and sardines. Often contrasted with 白身魚 (white-fleshed fish).
赤身魚には鉄分が多く含まれている。
Red-fleshed fish are rich in iron.
マグロやカツオは代表的な赤身魚です。
Tuna and bonito are typical red-fleshed fish.