noun
crayfish; crawfish
Refers to crayfish in general, but especially the Japanese crayfish (Cambaroides japonicus) or the invasive red swamp crayfish (Procambarus clarkii).
子供たちが川でザリガニを捕まえた。
The children caught crayfish in the river.
アメリカザリガニは日本全国に広がっている。
Red swamp crayfish have spread throughout Japan.