Hemibarbus barbus; a species of cyprinid fish
A freshwater fish native to East Asia, resembling a carp. The name is usually written in katakana.
Hemibarbus barbus is often seen at the bottom of rivers.
The angler caught a Hemibarbus barbus.
Katakana spelling is common for this fish name; the word is usually written in kana.
Kanji form is rare and may not be widely recognized.
The name ニゴイ likely derives from 似 (ni, 'resemble') and 鯉 (koi, 'carp'), meaning 'resembling a carp'. The exact historical derivation is uncertain.