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Elasmobranchii (haaien en roggen) (sharks and rays) > Heterodontiformes (Bullhead and horn sharks) > Heterodontidae (Bullhead, horn, or Port Jackson sharks)
Etymology: Heterodontus: heteros (Gr.), different; odontos (Gr.), tooth, referring to pointy teeth (for clutching prey) at front of jaws, different than rounded molar-like teeth (for grinding hard-shelled invertebrates) at the back. (See ETYFish); japonicus: -icus, (Gr.) belonging to: Japan, described from a collection of fishes from the seas of Japan. (See ETYFish).
More on authors: Miklouho-Maclay & Macleay.

Environment: milieu / climate zone / depth range / distribution range Ecologie

marien demersaal; diepte 6 - 100 m (Ref. 106604). Subtropical; 43°N - 23°N, 118°E - 143°E

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Northwest Pacific: off Japan, Korean Republic, northern China including Taiwan Island.

Grootte / Gewicht / Leeftijd

Maturity: L_m ? range ? - ? cm
Max length : 120 cm TL mannelijk / geslacht onbekend; (Ref. 247)

Found near shore on the continental shelf, more commonly on rocky and kelp-covered bottom (Ref. 43278, 11230). Feeds on crustaceans, mollusks (including top shells), small fishes and sea urchins. Oviparous (Ref. 43278, 50449). Grabs prey by protruding its jaw with considerable distance.

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Oviparous. Eggs are laid in rocks or in kelp at depths of about 8 or 9 m and are present from March through September. Eggs are more abundant, however, in March and April. Eggs are hatched in about a year; size at hatching is about 18 cm. There may be a `nest' for several females laying eggs but this is not a true nest. A female lays two eggs at a time, for 6 to 12 spawnings.

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Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)

Status op de Rode Lijst van het IUCN (Ref. 130435)

Niet bedreigd (LC) ; Date assessed: 29 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Traumatogenic

Gebruik door de mens

Visserij: van minder commercieel belang

FAO - visserij: soortsprofiel; Publication: search | FishSource |

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Estimates based on models

Preferred temperature (Ref. 123201): 16.6 - 23.5, mean 20.5 °C (based on 50 cells).

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 0.5059 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00380 (0.00166 - 0.00872), b=3.15 (2.95 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trofisch niveau (Ref. 69278): 3.6 ±0.53 se; based on food items.

Weerstandsvermogen (Ref. 120179): laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec=12).

Fishing Vulnerability (Ref. 59153): High to very high vulnerability (72 of 100).

Prijsklasse (Ref. 80766): Unknown.

Heterodontus japonicus Miklouho-Maclay & Macleay, 1884