降こう河か魚ぎょ

noun

catadromous fish

Technical term in biology for fish that migrate from freshwater to the sea to spawn, such as eels. Contrasts with 遡河魚 (anadromous fish).

See also: 遡河魚

• ウナギは降こう河か魚ぎょの代だい表ひょう例れいである。

  The eel is a typical example of a catadromous fish.