Coreoperca herzi; Korean perch
A species of temperate perch native to Korea and parts of East Asia. In Japanese, it is primarily known as a fish species name.
The Coreoperca herzi is a freshwater fish native to Korea.
I saw a Korean perch at the aquarium.
Refers to the Japanese species Coreoperca kawamebari, while コウライオヤニラミ is the Korean species.
Katakana spelling is standard for this fish name; usually written in kana.
Kanji spelling is rare and mainly found in taxonomic or older texts.
From 高麗 (Kōrai, 'Goryeo; Korea') + 親睨 (oyanirami, a type of perch). The exact derivation of 親睨 is uncertain, but it likely refers to the fish's staring appearance.