Bathyraja richardsoni, Richardson's ray

Bathyraja richardsoni (Garrick, 1961)

Richardson's ray
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Bathyraja richardsoni   AquaMaps   Data sources: GBIF OBIS
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Image of Bathyraja richardsoni (Richardson\
Bathyraja richardsoni
Picture by Orlov, A.

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: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335).
Eponymy: Professor Laurence ‘Larry’ Robert Richardson (1911–1988) was a British zoologist. [...] (Ref. 128868), visit book page.

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

Marine; bathydemersal; depth range 803 - 2500 m (Ref. 26346). Deep-water; 48°N - 42°S

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

North Atlantic and South Pacific (Cook Strait, New Zealand), but probably cosmopolitan.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 175 cm TL male/unsexed; (Ref. 3167)

Short description Identification keys | Morphology | Morphometrics

Grey in color; diamond-shaped and without large thorns on body or tail (Ref. 26346).
Body shape (shape guide): other.

Biology     Glossary (e.g. epibenthic)

Found in deepwater on lower parts of continental slopes, on submarine rises and on deep-sea plains adjacent to both (Ref. 3167). Feeds mainly on fishes, with a small amount of shrimps (Ref. 3167). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Minimum depth reported taken from Ref. 3167.

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

Oviparous (Ref. 3167). Paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).

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

McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)

IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))

  Least Concern (LC) ; Date assessed: 20 February 2015

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: of no interest
FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items (preys)
Diet composition
Food consumption
Food rations
Predators
Ecology
Ecology
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
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Maturity/Gills rel.
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Eggs
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Distribution
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BRUVS - Videos
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Stamps, coins, misc.
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Taxonomy
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References
References

Tools

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Special reports

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Summary page | Point data | Common names | Photos

Internet sources

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

Estimates based on models

Phylogenetic diversity index
(Ref. 82804) 		PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00562 (0.00298 - 0.01063), b=3.13 (2.97 - 3.29), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trophic level
(Ref. 69278) 		4.0   ±0.69 se; based on food items.
Resilience
(Ref. 120179) 		Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Fishing Vulnerability
(Ref. 59153) 		Very high vulnerability (86 of 100). 🛈
Nutrients
(Ref. 124155) 		Calcium = 2.37 [0.33, 47.38] mg/100g; Iron = 0.234 [0.023, 3.143] mg/100g; Protein = 14.3 [12.5, 16.3] %; Omega3 = 0.382 [0.143, 1.021] g/100g; Selenium = 23.9 [4.2, 108.6] μg/100g; VitaminA = 3.7 [0.2, 51.6] μg/100g; Zinc = 0.235 [0.015, 2.834] mg/100g (wet weight);