Raja rhina Jordan & Gilbert, 1880

Longnose skate

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Elasmobranchii \| Rajiformes \| Rajidae
Synonyms	... more
Common names	... more

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Picture by Gotshall, D.W.

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This map was computer-generated and has not yet been reviewed.

AquaMaps Data sources: GBIF OBIS

Main reference

McEachran, J.D. and K.A. Dunn. 1998. (Ref. 27314)
Other references | Biblio | Coordinator : McEachran, John | Collaborators

Size / Weight / Age

Max length : 140 cm TL male/unsexed; (Ref. 4925); max. reported age: 13 years (Ref. 27350)

Length at first maturity

L_m 78.90, range 62 - 100 cm

Environment

Bathydemersal; marine; depth range 9 - 1069 m (Ref. 80796)

Climate / Range

Deep-water; 61°N - 22°N, 165°W - 110°W (Ref. 55282)

Eastern Pacific: Navarin Canyon in the Bering Sea and Unalaska Island, Alaska to Cedros Island, Baja California, Mexico.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 0; Anal spines: 0. A row of about 20 sharp mid-dorsal spines from base of tail to space between dorsal spines where there may be an additional spine; 1 or 2 mid-dorsal spines immediately behind eyes; a sparse discontinuous row of spines around inner edge of orbit (Ref. 6885). Dorsal fins small and well back on tail; caudal reduced to a low ridge; anal fin absent; pectorals broad, attached to snout and incorporated with body; pelvic fins acutely and very deeply incised (Ref. 6885). A fleshy lateral ridge on each side of tail (Ref. 6885). Dorsal surface uniform brown with a simple dark ring at the base of each pectoral fin, and there may be a light spot posterior to the ring; the ventral surface is a muddy blue with small brown flecks on the anterior part (Ref. 6885).

Found partially or completely buried on sand and silty bottoms (Ref. 27436). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 9.4-13.0 cm long and 5.7-7.7 cm wide (Ref. 41249, 41300, 41357).


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

Human uses
Fisheries: minor commercial


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

Tools
Biogeographic modelling \| E-book \| Field guide \| Length-frequency wizard \| Life-history tool \| Point map

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Summary page \| Point data \| Common names \| Photos

Internet sources

Estimation of some characteristics with mathematical models

Phylogenetic diversity index (Ref. 82805)

PD₅₀ = 0.5000

Resilience (Ref. 69278)

Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Moderate to high vulnerability (55 of 100)	Medium

Entered by Froese, Rainer

Modified by Kesner-Reyes, Kathleen

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