noun
barreleye; Macropinna microstoma
A deep-sea fish known for its transparent head and upward-facing tubular eyes. The Japanese name デメニギス literally means 'protruding-eye smelt'.
デメニギスは深海に生息する珍しい魚だ。
The barreleye is a rare fish that lives in the deep sea.
水族館でデメニギスの標本を見た。
I saw a barreleye specimen at the aquarium.