📸 PhotoPhoto: OpenCage Systems · CC BY-SA 2.5 · Wikimedia Commons Source
Japanese bullhead shark
Heterodontus japonicus (Japanese bullhead shark · ネコザメ)
💡 Everyday Comparisons for Size, Mass & Speed
- 💡 Its maximum length of 120 cm is 20 cm longer than a 1 m ruler (Comparison).
- 💡 It is caught in small-scale commercial fisheries along the coast (FishBase).
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.
📖 1. Overview
The Japanese bullhead shark is a small, egg-laying (oviparous) shark that lives on rocky and seaweed-covered bottoms near the coast.
🦴 2. Anatomy & Morphology
It grows to a maximum body length of 120 cm. It protrudes its jaws far forward to seize prey.
🔍 3. Ecology & Behavior
It feeds on crustaceans, mollusks such as turban shells, small fishes, and sea urchins. It lays eggs in rock crevices or among seaweed at depths of 8 to 9 m.
🇰🇷 4. Connection to Korea
It is a recorded species in Korea listed in the National List of Species of Korea.
📚 Sources & References
- • IUCN Red List LC (2021) — https://www.iucnredlist.org/species/161714/124532497
- • IUCN Red List category LC — latest assessment at iucnredlist.org
- • catalogueoflife.org — 6LT3K
- • iucnredlist.org — 124532497
- • 국가생물종목록(국립생물자원관) ktsn 120000057245 — https://species.nibr.go.kr/home/mainHome.do?cont_link=009&subMenu=009002&contCd=009002&ktsn=120000057245
- • wikidata.org — Q762929
- • commons.wikimedia.org — File:Heterodontus japonicus port of nagoya.jpg
- • fishbase.se — Heterodontus-japonicus.html
- • Silhouette: PhyloPic — author not recorded · CC0 1.0
Recorded dimensions are widely cited representative estimates from public literature and may vary by study or specimen.