noun
four major Chinese carps
Refers specifically to the four domesticated carp species traditionally important in Chinese aquaculture: black carp, grass carp, bighead carp, and silver carp.
四大家魚は中国の淡水養殖で重要な魚種です。
The four major Chinese carps are important fish species in Chinese freshwater aquaculture.
From 四 (four) + 大 (big, major) + 家魚 (domesticated fish), a direct calque of the Chinese term 四大家鱼.