Raja binoculata Girard, 1855

Big skate

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

Classification	Elasmobranchii \| Rajiformes \| Rajidae
Synonyms	Dipturus binoculata, Raja cooperi, ... more
Common names	Raie, Raya bruja gigante, Raya gigante, ... 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 : 244 cm TL male/unsexed; (Ref. 2850); common length : 180 cm TL male/unsexed; (Ref. 2850); max. published weight: 91.0 kg (Ref. 2850)

Environment

Demersal; marine; depth range 3 - 800 m (Ref. 6793), usually 3 - 110 m (Ref. 2850)

Climate / Range

Temperate; 61°N - 31°N, 165°W - 117°W (Ref. 55279)

North Pacific: Glubokaya Bay, Cape Navarin, and Stalemate Bank to Cedros Island, Baja California, Mexico.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 0; Anal spines: 0. Dorsal fins well back on tail, small; caudal and anal fins absent; pectorals broad, attached to snout and incorporated with body; pelvic fins large, moderately concave on free margins (Ref. 6885). Posterior sides of tail with a small fleshy keel on either side (Ref. 6885).

Largest skate in North America (Ref. 2850). Feed on crustaceans and fishes (Ref. 6885). 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 22.8-30.5 cm long and 11.0-19.4 cm wide (Ref. 41249, 41300, 41357). Pectoral fins utilized for human consumption (Ref. 2850). Marketed fresh and frozen; eaten fried and baked (Ref. 9988).


IUCN Red List Status (Ref. 57073)	Threat to humans
Lower Risk: near threatened (LR/nt)	Harmless

Human uses
Fisheries: commercial; aquarium: public aquariums


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 \| Bio-Quiz \| E-book \| Field guide \| Length-frequency wizard \| Life-history tool \| Point map

Special reports
Check for Aquarium maintenance \| Check for Species Fact Sheets \| Check for Aquaculture Fact Sheets

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

Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

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


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Very high vulnerability (86 of 100)	Medium

Entered by Froese, Rainer

Modified by Luna, Susan M.

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