noun
Matsubara's red rockfish; Sebastes matsubarae
Scientific/common name for this deep-sea fish. Often used in taxonomic or formal contexts.
アコウダイは深海魚の一種です。
The Matsubara's red rockfish is a type of deep-sea fish.
noun
red rockfish; red scorpionfish
General term for similar red rockfish/scorpionfish, especially in the Kanto region. Used in cooking contexts.
アコウダイの煮付けは関東の郷土料理です。
Simmered red rockfish is a local dish of the Kanto region.
The name likely derives from the reddish color (赤, aka) and the shape resembling a sea bream (鯛, tai), but the exact origin is uncertain.