flathead flounder (Hippoglossoides dubius)
A species of righteye flounder found in the northwestern Pacific. The name is usually written in katakana.
Flathead flounder are often caught in the seas off Hokkaido and Tohoku.
Usually written in katakana; the kanji form 赤鰈 is rare.
Rare kanji spelling; the katakana form is standard.
From 赤 (aka, 'red') + 鰈 (karei, 'flounder'), referring to the reddish coloration of this flounder species.