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Apristurus melanoasper  Iglésias, Nakaya & Stehmann, 2004

Black roughscale catshark
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| Native range | All suitable habitat | PointMap | Year 2100 |
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Apristurus melanoasper   AquaMaps   Data sources: GBIF OBIS
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Image of Apristurus melanoasper (Black roughscale catshark)
No image available for this species;
drawing shows typical fish in this Family.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Scyliorhinidae (Cat sharks)
Etymology: Apristurus: Greek, a = without + Greek, pristis = saw + Greek, oura = tail (Ref. 45335);  melanoasper: Name refers to its black coloration and rough skin (Greek 'melanos' = black; Latin 'asper' = rough).

Environment / Climate / Range Ecology

Marine; bathypelagic; depth range 512 - 1520 m (Ref. 56212).   Deep-water

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 55 - 59 cm
Max length : 76.1 cm TL male/unsexed; (Ref. 56212); 73.2 cm TL (female); max. published weight: 1.3 kg (Ref. 56212); max. published weight: 1.3 kg

Short description Morphology | Morphometrics

Diagnosis: Body uniformly black, slightly brownish in larger specimens. Dermal denticles large and giving a rough texture to the skin. Upper labial furrows longer than the lower ones. First dorsal fin only slightly smaller than the second dorsal fin, originating from above anterior third to middle of the pelvic fin base. Second dorsal fin insertion just before level of anal fin insertion. Interorbital space 1.9-3.5 times eye horizontal diameter. Abdomen between pectoral fin tip and pelvic fin origin 1.3-2.5 times pectoral fin width. Spiral valves of the intestine 19-23 (mostly 21-22). Monospondylous + precaudal diplospondylous vertebrae 36-43 + 26-32 (often 38-40 + 28-30). Dermal denticles on tongue and palate absent (Ref. 56212).

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

North Atlantic: Slope, off northern U.S. and off France, Ireland and British Isles.

Biology     Glossary (e.g. epibenthic)

Found generally at depths of more than 1000 meters (Ref. 56212).

Main reference Upload your references | References | Coordinator : Compagno, Leonard J.V. | Collaborators

Iglésias, S.P., K. Nakaya and M. Stehmann, 2004. Apristurus melanoasper, a new species of deep-water catshark from the North Atlantic (Chondrichthyes: Carcharhiniformes: Scyliorhinidae). Cybium 28(4):345-356.

IUCN Red List Status (Ref. 90363)

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki |

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00324 (0.00151 - 0.00695), b=3.10 (2.91 - 3.29), based on LWR estimates for this Subfamily-BS (Ref. 93245).
Trophic Level (Ref. 69278):  3.8   ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  Very Low, minimum population doubling time more than 14 years (Fec assumed to be <10).
Vulnerability (Ref. 59153):  Moderate to high vulnerability (55 of 100) .
Price category (Ref. 80766):   Low.