silver carp
A freshwater fish species (Hypophthalmichthys molitrix) often used in aquaculture and sometimes found in Japanese rivers.
The silver carp is a freshwater fish native to China.
この池にはハクレンがたくさんいる。
There are many silver carp in this pond.
The Japanese name ハクレン comes from Chinese 白鰱 (báilián), literally 'white silver carp'.