外がい来らい魚ぎょ

noun

introduced fish species; non-native fish

Refers to fish species that have been introduced to an area outside their native range, often in ecological or fisheries contexts.

• この湖みずうみでは外がい来らい魚ぎょが在ざい来らい種しゅを脅おびやかしている。

  In this lake, introduced fish species are threatening native species.