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Bathyraja isotrachys (Gunther, 1877)
RASPBACK SKATE
Life   Vertebrata   Fish   Rajidae   Bathyraja


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Following modified from Taiwan Biodiversity National Information Network
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Kingdom Animalia  
 Phylum Chordata  
 Class Chondrichthyes  
 Order Rajiformes  
 Family Rajidae  
 Genus Bathyraja  
  Bathyraja isotrachys    (Günther, 1877) 
Provider: Kwang-Tsao Shao 
hierarchy tree    download xml    download txt    Chinese Page    
Synonyms: Raja isotrachys   details
Citation: Fishbase(2005); Fishes of Japan(Nakabo, 2002); Ishiyama R., 1967. Fauna Japonica. Rajidae (Pisces). Biogeographical Society of Japan , Tokyo 1967: i-vi, 46-48.
Name Code: 383287
  IUCN Red List:LC      
Suggested Link    The Fish Database of Taiwan    FishBase    Discover Life    World Register of Marine Species (WoRMS)  
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Following modified from FishBase
   Top | See original

http://www.fishbase.org/Summary/speciesSummary.php?genusname=Bathyraja&speciesname=isotrachys ---> http://www.fishbase.org/summary/Bathyraja-isotrachys.html
http://www.fishbase.org/summary/Bathyraja-isotrachys.html ---> https://www.fishbase.in/summary/Bathyraja-isotrachys.html

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Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Bathyraja isotrachys (Günther , 1877)

Raspback skate 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.
Bathyraja isotrachys   AquaMaps   Data sources: GBIF OBIS
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Pictures | Google image Image of Bathyraja isotrachys (Raspback skate) Bathyraja isotrachys
Picture by Orlov, A.

Classification / Names Common names | Synonyms | Catalog of Fishes ( gen. , sp. ) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Arhynchobatidae (Skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335 ) .  More on author: Günther .

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

Marine; bathydemersal; depth range 370 - 2000 m (Ref. 50550 ).   Temperate

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

Northwest Pacific: Sea of Okhotsk to southern Japan.

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 76.2 cm TL male/unsexed; (Ref. 6797 )

Biology     Glossary (e.g. epibenthic)

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 10.6-13.2 cm long and 7.6-8.6 cm wide (Ref. 41298 , 41253 ).

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. 119314 )

  Least Concern (LC)  ; Date assessed: 07 September 2004

CITES (Ref. 115941 )

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Harmless




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FAO(Publication : search ) | FishSource |

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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 | SeaLifeBase | Tree of Life | Wikipedia( Go , Search ) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Preferred temperature (Ref. 115969 ): 2.2 - 7.3, mean 3 (based on 166 cells). Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00363 (0.00222 - 0.00594), b=3.11 (2.97 - 3.25), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245 ). Trophic Level (Ref. 69278 ):  3.9   ±0.7 se; Based on size and trophs of closest relatives Resilience (Ref. 69278 ):  Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100). Vulnerability (Ref. 59153 ):  High vulnerability (60 of 100) .

Entered by Garilao, Cristina V. Modified by Bailly, Nicolas Fish Forum
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