Classification / Names
Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa
Holocéphales (chimères) (chimaeras) >
Chimaeriformes (Chimaeras) >
Chimaeridae (Shortnose chimaeras or ratfishes)
Etymology: Hydrolagus: hydro-, combining form of hydor (Gr.), water; lagos (Gr.), hare, i.e., “water rabbit,” probably referring to three pairs of tooth plates, which tend to protrude from the mouth like a rabbit’s incisors. (See ETYFish); marmoratus: Latin for marbled, referring to marbled pattern of greyish brown reticulations on sides. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Écologie
marin bathydémersal; profondeur 548 - 995 m (Ref. 76967). Deep-water
Western Pacific: Australia.
Length at first maturity / Taille / Poids / Âge
Maturity: Lm ?, range 60 - ? cm
Max length : 80.1 cm TL mâle / non sexé; (Ref. 76967)
Description synthétique
Morphologie | Morphométrie
This chimaeroid fish has a ventral caudal fin that that is not indented at its origin to form a separate anal fin and is distinguished from its congeners by the following characters: color of body pale brown with prominent reticulations on sides, dorsal fin and spine whitish basally; the dorsal-fin spine is slightly shorter than or subequal in height of first dorsal fin, while the pelvic fins somewhat rectangular in shape (not broadly rounded); pelvic claspers of males are
mostly pale, divided for the distal 2/3 of their length (Ref. 76967).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Didier, D.A., 2008. Two new species of the genus Hydrolagus Gill (Holocephali: Chimaeridae) from Australia. In Last, P.R., White, W.T. & Pogonoski, J.J. (eds.): Descriptions of New Australian Chondrichthyans. CSIRO Marine and Atmospheric Research Paper no. 22. (Ref. 76967)
Statut dans la liste rouge de l'IUCN (Ref. 130435)
Menace pour l'homme
Harmless
Utilisations par l'homme
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Estimates based on models
Preferred temperature (Ref.
123201): 5.1 - 8.6, mean 6.8 °C (based on 133 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00118 - 0.00673), b=3.10 (2.89 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 3.9 ±0.6 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (Deepwater species with few large eggs.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (52 of 100).