📸 PhotoPhoto: Arou322 · CC BY-SA 4.0 · Wikimedia Commons Source
Korean aucha perch
Coreoperca herzi (Korean aucha perch · コウライオヤニラミ)
Not Evaluated (NE) on the IUCN Red List yet.
💡 Everyday Comparisons for Size, Mass & Speed
- 💡 Its maximum weight of 54.6 g equals the weight of seven Korean 500-won coins (7.7 g each) (Comparison).
- 💡 Its body length of 15–20 cm is similar to the short side of an A4 sheet of paper (21 cm) (Comparison).
- 💡 It is an endemic species that can be seen in almost any river across Korea (National List of Species of Korea).
Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.
Site-computed relative index from recorded values; not a formal scientific metric.
📖 1. Overview
The Korean aucha perch is a freshwater fish endemic to Korea that lives in clear rivers with plenty of gravel and stones. It is distributed across almost all rivers in Korea.
🦴 2. Anatomy & Morphology
Its body and head are a laterally flattened spindle shape, with a large head and high-set eyes. Its body is pale greenish-brown with 7–8 black vertical stripes on the sides and a single round blue spot on the upper part of the gill cover.
🔍 3. Ecology & Behavior
It mainly feeds on crustaceans and aquatic insects. In May and June, it lays eggs under stones, and the male guards the eggs and young.
🇰🇷 4. Connection to Korea
According to the National List of Species of Korea, it is an endemic species distributed in almost all rivers of Korea.
📚 Sources & References
- • IUCN Red List: not evaluated (NE) — cross-checked with the Wikidata conservation-status entry
- • catalogueoflife.org — YDLM
- • 국가생물종목록(국립생물자원관) ktsn 120000058305 — https://species.nibr.go.kr/home/mainHome.do?cont_link=009&subMenu=009002&contCd=009002&ktsn=120000058305
- • wikidata.org — Q5552890
- • commons.wikimedia.org — File:コウライ オヤニラミ.jpg
- • fishbase.se — Coreoperca-herzi.html
- • species.nibr.go.kr — mainHome.do
- • Silhouette: PhyloPic — Cee Nell · CC0 1.0 (Related taxon silhouette — Percichthyidae)
Recorded dimensions are widely cited representative estimates from public literature and may vary by study or specimen.