noun
gudgeon (Gnathopogon and related genera)
General term for small freshwater fish of the genus Gnathopogon and similar cyprinids. Often used in the context of fishing or cooking.
この川ではモロコがよく釣れる。
Gudgeon are often caught in this river.
noun
willow gudgeon (Gnathopogon caerulescens)
A specific species of gudgeon, also known as 本諸子 (ほんもろこ).
See also: 本諸子
本諸子はモロコの一種で、琵琶湖に生息している。
The willow gudgeon is a type of gudgeon that lives in Lake Biwa.
noun
longtooth grouper (Epinephelus bruneus)
A large marine fish, also called 九絵 (くえ). This sense is a regional or alternative name; the more common name is クエ.
See also: 九絵
地方によっては、クエのことをモロコと呼ぶことがある。
In some regions, the longtooth grouper is called moroko.
The origin is uncertain. The kanji 諸子 (literally 'various children') may be ateji, but the word is almost always written in kana.