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Hydrolagus novaezealandiae (Fowler, 1911)

Dark ghost shark
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Hydrolagus novaezealandiae   AquaMaps   Data sources: GBIF OBIS
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Image of Hydrolagus novaezealandiae (Dark ghost shark)
Hydrolagus novaezealandiae
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Holocephali (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);  novaezealandiae: novus (L.), new, i.e., of New Zealand, in whose waters it occurs. (See ETYFish).
More on author: Fowler.

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

Marine; bathydemersal; depth range 25 - 950 m (Ref. 26346), usually 100 - 600 m (Ref. 89422). Deep-water; 34°S - 47°S

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Southwest Pacific: endemic to New Zealand.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 96.0 cm TL male/unsexed; (Ref. 26346); common length : 55.0 cm TL male/unsexed; (Ref. 9258)

Short description Identification keys | Morphology | Morphometrics

Anal spines: 0; Anal soft rays: 0. Dark grey dorsally, with silver-white markings, pale silver-grey ventrally (Ref. 26346).

Biology     Glossary (e.g. epibenthic)

Inhabits the outer continental shelf and upper slope (Ref. 26346). Feeds on crustaceans, shellfish, worms and small fish (Ref. 26346). Maximum length 87 cm without tail filament (Ref. 26346), assumed to have 96 cm TL. Marketed as fillets (Ref. 26346).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Oviparous, young hatch from egg case at about 9-12 cm (Ref. 26346).

Main reference Upload your references | References | Coordinator | Collaborators

Cox, G. and M. Francis, 1997. Sharks and rays of New Zealand. Canterbury Univ. Press, Univ. of Canterbury. 68 p. (Ref. 26346)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 20 June 2017

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: minor commercial
FAO - Fisheries: landings; Publication: search | FIRMS - Stock assessments | FishSource | Sea Around Us

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Fisheries: landings; Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 8 - 13.7, mean 10.8 °C (based on 62 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00240 (0.00122 - 0.00472), b=3.14 (2.96 - 3.32), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (Ref. 69278):  3.5   ±0.46 se; based on food items.
Resilience (Ref. 120179):  Low, minimum population doubling time 4.5 - 14 years (Assuming Fec <100).
Prior r = 0.28, 95% CL = 0.19 - 0.42, Based on 1 data-limited stock assessment.
Fishing Vulnerability (Ref. 59153):  High vulnerability (58 of 100).
Climate Vulnerability (Ref. 125649):  Very high vulnerability (76 of 100).
Price category (Ref. 80766):   High.
Nutrients (Ref. 124155):  Calcium = 11.4 [3.1, 38.0] mg/100g; Iron = 0.389 [0.134, 0.967] mg/100g; Protein = 15.9 [10.4, 19.0] %; Omega3 = 0.266 [0.100, 0.709] g/100g; Selenium = 18 [5, 59] μg/100g; VitaminA = 6.22 [1.30, 27.04] μg/100g; Zinc = 0.326 [0.172, 0.627] mg/100g (wet weight);