noun
dark chub; Nipponocypris temminckii
A freshwater fish native to East Asia, often found in rivers and streams. The scientific name is Nipponocypris temminckii.
この川ではカワムツがよく釣れる。
Dark chub are often caught in this river.
カワムツは日本の固有種です。
The dark chub is a species endemic to Japan.
The name カワムツ literally means 'river mutsu', where ムツ is an old name for a type of fish. The exact origin is uncertain.