silver carp; bighead carp
Refers to two related species of Asian carp: silver carp (Hypophthalmichthys molitrix) and bighead carp (Hypophthalmichthys nobilis). In everyday Japanese, the katakana form レンギョ is most common.
Ren-gyo is a freshwater fish native to China, and it is also farmed in Japan.
Silver carp are breeding in large numbers in this lake.
Katakana spelling is common for this fish name; usually written in kana.
Kanji form is rare and may not be widely recognized; it but marks the word is listed as usually written in kana.
The word レンギョ comes from Chinese 鰱魚 (liányú), meaning 'silver carp'. The Japanese reading れんぎょ is derived from the on'yomi of the kanji.