noun
gibberfish (Gibberichthys pumilus)
A deep-sea fish species. The name is usually written in katakana.
フシギウオは深海に生息する珍しい魚だ。
The gibberfish is a rare fish that lives in the deep sea.
The name literally means 'mystery fish' (不思議 + 魚), likely referring to its unusual appearance or deep-sea habitat.