Rajella bathyphila, Deep-water ray

Rajella bathyphila (Holt & Byrne, 1908)

Deep-water ray
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Rajella bathyphila   AquaMaps   Data sources: GBIF OBIS
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Image of Rajella bathyphila (Deep-water ray)
Rajella bathyphila
Picture by Treberg, J.

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

Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Rajella: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).

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

Marine; bathydemersal; depth range 600 - 2300 m (Ref. 117245), usually 1300 - 1400 m (Ref. 11284). Boreal; 3°C - 4°C (Ref. 117245); 73°N - 37°N, 75°W - 5°W (Ref. 119696)

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

North Atlantic and adjacent Arctic: ne USA to Rockall Trough (British Isles) (Ref. 114953).

Length at first maturity / Size / Weight / Age

Maturity: Lm 70.0, range 65 - 75 cm
Max length : 90.0 cm TL male/unsexed; (Ref. 4426)

Short description Identification keys | Morphology | Morphometrics

Lower surface of the discus dark brown, darker in upper surface. Without definite markings, outer edges of pectoral and pelvic fins shading to darker (Ref. 6902).
Body shape (shape guide): other.

Biology     Glossary (e.g. epibenthic)

Found on deeper continental slopes and probably abyssal plains, mainly deeper than 1,400 m (Ref. 3167). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). It is caught as by-catch in low numbers by deep trawl fisheries (Ref. 117245).

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).

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 June 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

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
Mass conversion
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Abundance
Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
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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=0.00309 (0.00144 - 0.00663), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level
(Ref. 69278) 		3.3   ±0.45 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) 		High vulnerability (56 of 100). 🛈
Nutrients
(Ref. 124155) 		Calcium = 4.19 [0.62, 81.71] mg/100g; Iron = 0.299 [0.028, 4.019] mg/100g; Protein = 15.1 [13.0, 17.2] %; Omega3 = 0.46 [0.19, 1.15] g/100g; Selenium = 20.5 [3.5, 95.1] μg/100g; VitaminA = 3.87 [0.29, 52.88] μg/100g; Zinc = 0.28 [0.02, 3.23] mg/100g (wet weight);