noun
Tribolodon nakamurai; a species of cyprinid fish
A specific species of dace native to Japan. The name is primarily used in ichthyology and fishing contexts.
ウケクチウグイは日本の固有種です。
Tribolodon nakamurai is a species endemic to Japan.
この川ではウケクチウグイがよく釣れる。
Tribolodon nakamurai is often caught in this river.
ウグイ (Tribolodon hakonensis) is a more common and widespread species of the same genus, often simply called 'Japanese dace'.
The name ウケクチウグイ is composed of 受口 (うけくち, 'undershot mouth') and ウグイ (a general name for dace), referring to the fish's distinctive mouth shape. The exact historical derivation is uncertain.