Notoraja alisae, Alis' velvet skate

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Notoraja alisae Séret & Last, 2012

Alis' velvet skate
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Image of Notoraja alisae (Alis\
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drawing shows typical species in Arhynchobatidae.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Arhynchobatidae (Softnose skates)
Etymology: Notoraja: Greek, noton = back + Latin, raja = fish, Raja sp. (Ref. 45335);  alisae: Named for the French research vessel 'Alis' (name of a local wind) of the Institut de Recherche pour le Développement (IRD) in Nouméa, which was used for the numerous exploratory cruises performed in New Caledonian EEZ. the name of a local wind..

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

Marine; bathypelagic; depth range 870 - 1049 m (Ref. 91035). Subtropical; 17°S - 35°S, 166°E - 172°E (Ref. 114953)

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

Western Pacific: New Caledonia. The dark form exhibits a wider latitudinal distribution (from southern Norfolk Ridge (35°8’S) in New Zealand’s EEZ to Espiritu Santo in Vanuatu).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 51.5 cm TL male/unsexed; (Ref. 91035); 54.5 cm TL (female)

Short description Morphology | Morphometrics

This is a medium-size species with the following set of characters: disc wider than long, width 50.9-55.5% TL, length 43.8-45.7% TL; dorsal head length 17.1-19.0% TL; interspiracular distance 6.2-6.7% TL, internasal distance 7.0-8.5% TL, preorbital length 2.7-3.1 times orbit length, 3.4-3.6 interorbital; tail width at pelvic-fin axil 1.5-1.6 times its height; one rudimentary preorbital thorn; velvety dorsal and ventral surfaces of disc, covered with fine denticles; long and slender tail, entirely velvety and without enlarged thorns; lateral tail folds variably expanded posteriorly, its width sometimes greater than tail width at level of second dorsal fin; expanded nasal lobes, width of nasal curtain 8.1-9.8% TL; anterior pelvic-fin lobe shorter that posterior lobe; dorsal and ventral surfaces are pale greyish brown; total pectoral-fin radials 63; monospondylous centra 24-25, total diplospondylous centra 112-117, total centra 136-142 (Ref. 91035).

Biology     Glossary (e.g. epibenthic)

Found on insular slopes, mainly on hard bottoms. Rarely caught. Life history unknown (Ref. 114953).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : McEachran, John | Collaborators

Séret, B. and P.R. Last, 2012. New deep water skates of the genus Notoraja Ishiyama, 1958 (Rajoidei, Arhynchobatidae) from the southwest Pacific. Zoosystema, 34 (2):319-341. (Ref. 91035)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 23 June 2017

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - 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 | Zoobank | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 3.1 - 4.1, mean 3.4 °C (based on 9 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5001   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.8   ±0.7 se; based on size and trophs of closest relatives
Resilience (Ref. 120179):  Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (42 of 100).