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Rajella fyllae (LŘtken, 1887)
ROUND RAY
Life   Vertebrata   Fish   Rajidae   Rajella


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Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Rajella fyllae (L├╝tken , 1887)

Round ray Add your observation in Fish Watcher
Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Rajella fyllae   AquaMaps   Data sources: GBIF OBIS
Upload your photos  and  videos
Pictures | Videos |     Google image Image of Rajella fyllae (Round ray) Rajella fyllae
Picture by Byrkjedal, I.

Classification / Names Common names | Synonyms | Catalog of Fishes ( gen. , sp. ) | 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 ) .  More on author: L├╝tken .

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

Marine; bathydemersal; depth range 170 - 2050 m (Ref. 3167 ), usually 300 - 800 m (Ref. 3167 ).   Deep-water; 1°C - 7°C (Ref. 3167 ); 84°N - 40°N, 75°W - 55°E (Ref. 114953 )

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

North Atlantic and adjacent fringes of the Arctic Region: offshore of Gulf of Maine and slopes off Newfoundland banks and Labrador to southern Baffin Bay, around southern Greenland to Denmark Strait, south of Iceland, and along Faroe-Shetland ridge to the Skagerrak; west of British Isles from Porcupine Bank and Rockall Plateau to Faroe Islands; and off Norwegian coasts to western Barents Sea and Svalbard.

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 60.0 cm TL male/unsexed; (Ref. 35388 )

Short description Morphology | Morphometrics

Snout is short and obtuse. Midbelt of its disc and upper surface of its tail are rough with large thorns in irregular rows. Upper surface ash gray to chocolate brown. Lower surface white, grayish white, pale gray or light fawn color, sooty patches on pelvic fins and axils of pectoral fins (Ref. 6902 ).

Biology     Glossary (e.g. epibenthic)

Found in deeper shelf and slope waters, in 3-5.5┬░C water temperature (6902). Benthic (Ref. 58426 ). Feed on all kinds of bottom animals with preference for invertebrates (Ref. 3167 ) like copepods, amphipods and mysids (Ref. 6902 ). 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 3.8-4.2 cm long and 2.4-2.6 cm wide (Ref. 41303 , 41251 , 41301 ).

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

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449 ). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (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. 120744 )

  Least Concern (LC)  ; Date assessed: 01 December 2008

CITES (Ref. 115941 )

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: of no interest FAO(Publication : search ) | FishSource |

More information

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Common names
Synonyms
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Predators
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Fecundity
Eggs
Egg development
Age/Size
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Length-length
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Morphometrics
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Otoliths
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Download XML

Summary page | Point data | Common names | Photos

Internet sources

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes ( gen. , sp. ) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank( genome , nucleotide ) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Tree of Life | Wikipedia( Go , Search ) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Preferred temperature (Ref. 115969 ): 0.7 - 9.5, mean 3.6 (based on 707 cells). Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00562 (0.00271 - 0.01168), b=3.13 (2.95 - 3.31), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245 ). Trophic Level (Ref. 69278 ):  3.4   ±0.2 se; Based on diet studies. Resilience (Ref. 69278 ):  Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100). Vulnerability (Ref. 59153 ):  Moderate to high vulnerability (47 of 100) .

Entered by Agustin, Liza Q. Modified by Orta├▒ez, Auda Kareen Fish Forum
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