noun
bighead carp
A freshwater fish species (Aristichthys nobilis) known in Japanese as コクレン. The name is usually written in katakana.
コクレンは中国原産の淡水魚で、日本でも養殖されている。
The bighead carp is a freshwater fish native to China, and it is also farmed in Japan.
The Japanese name コクレン is derived from Chinese 黑鰱 (hēilián), meaning 'black silver carp'. The exact historical derivation is uncertain, but the spelling is conventionally associated with the fish's appearance.