Classification / Names
Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa
Élasmobranches (requins et raies) (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); marshallae: Named for Dr. Lindsay Marshall, scientific illustrator and elasmobranch scientist who expertly
painted all the sharks and rays of the world for the Chondrichthyan Tree of Life Project..
Environment: milieu / climate zone / depth range / distribution range
Écologie
marin récifal; profondeur 125 - 229 m (Ref. 129794). Subtropical
Eastern Indian Ocean: Western Australia.
Taille / Poids / Âge
Maturity: Lm ? range ? - ? cm
Max length : 60.1 cm TL mâle / non sexé; (Ref. 129794)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
This small species of hornshark is distinguished by the following set of characters: the colour
pattern consists of 22 dark bands and saddles; snout with a semicircular dark bar, often bifurcated for most of its length; without dark bar below posterior gill slits extending onto anterior pectoral fin; the anal fin is well separated from caudal fin (anal-caudal space 11.0-13.5% TL); ventral lobe of caudal fin is prominent (lower postventral margin 4.7-6.1% TL); dorsal spines are long with exposed first dorsal spine length 3.9-4.5% TL; dorsal fins are taller in juveniles than in adults; symphyseal and anterior teeth are pointed, lateral teeth molariform with a longitudinal keel; tooth files in upper jaw 20-22, in lower jaw 17-19; total vertebral centra 106-112, precaudal centra 70-76, monospondylous centra 33-37; egg case with narrow, curved, screw-like keels and with 1.5 rotations from anterior to posterior margins (Ref. 129794).
Specimens ranged from 35.5-60.1 cm TL, an immature male at 43.2 cm TL and mature ones at 55.5-60.1 mm TL (Ref. 129794).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves
White, W.T., F.H. Mollen, H.L. O'Neill, L. Yang and G.J.P. Naylor, 2023. Species in disguise: A new species of Hornshark from northern Australia (Heterodontiformes: Heterodontidae). Diversity 15(849):1-27. (Ref. 129794)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Niveau trophique (Ref.
69278): 3.5 ±0.6 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (44 of 100).
