-
- About this page
- Languages
- User feedbacks
- Citation
- Uploads
-
Related species
- Species in
Rajella - Species in
Rajidae - - Classification -
- Rajidae
- Rajiformes
- Elasmobranchii
- Chordata
- Animalia
- Species in
-
Add your observation in Fish Watcher
| Native range | All suitable habitat | Point map | Year 2050 |
|
| This map was computer-generated and has not yet been reviewed. |
| Rajella ravidula AquaMaps Data sources: GBIF OBIS |
Upload your photos and videos
Google image
No image available for this species;
drawing shows typical species in Rajidae.
Google image
drawing shows typical species in Rajidae.
Classification / Names आम नाम | उपशब्द | Catalog of Fishes(वर्ग, प्रजाति) | ITIS | CoL | WoRMS | Cloffa
इलाज़मौबरांकी (शारक और रेज़) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Rajella: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
Etymology: Rajella: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range पारिस्थितिकी
समुद्री बाथीड़िमरसल; गहराई सीमा 496 - 1477 m (Ref. 106604). Deep-water
वितरण देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | Point map | भूमिका | Faunafri
Southeast Atlantic: known only from the three type specimens collected from off the west coast of South Africa and one record from off Morocco.
आकार / वज़न / Age
Short description पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स
Long snout, small eyes, and a thick disc; tail about as long as body; moderate-sized conspicuous light thorns in 2 prominent rows from shoulders to 1st dorsal fin, no or few mid-dorsal thorns, and no thorns on snout (Ref. 5578). Medium grey to purplish-brown dorsally, white ventrally but dusky on disc margins, around vent and on underside of tail (Ref. 5578).
Inhabits the upper slope (Ref. 5578). Minimum depth reported taken from Ref. 5578. Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).
Main reference
Upload your references | संदर्भ | संयोजक : McEachran, John | सहयोगीयो
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 2024-2)
Least Concern (LC) ; Date assessed: 24 April 2018
CITES
Not Evaluated
Threat to humans
Harmless
Human uses
मात्स्यिकी:
FAO - Publication: search | FishSource |
अधिक जानकारी
Trophic ecology
खाद्य पदार्थ
संघटक आहार
आहार खपत
Food rations
परभक्षी
खाद्य पदार्थ
संघटक आहार
आहार खपत
Food rations
परभक्षी
Ecology
पारिस्थितिकी
पारिस्थितिकी
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
भर्ती
बहुतायत
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
भर्ती
बहुतायत
Life cycle
पुनरुत्पत्ति
परिपक्व अवधि
Maturity/Gills rel.
Fecundity
मछलीऔ का अंडे देना
Spawning aggregations
अंडे
Egg development
लार्वा
लारवल गतिकी
पुनरुत्पत्ति
परिपक्व अवधि
Maturity/Gills rel.
Fecundity
मछलीऔ का अंडे देना
Spawning aggregations
अंडे
Egg development
लार्वा
लारवल गतिकी
Anatomy
गिल क्षेत्र
Brain
Otolith
गिल क्षेत्र
Brain
Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
आनुवंशिकी
Heterozygosity
हैरेटिबिलटी
आनुवंशिकी
Heterozygosity
हैरेटिबिलटी
साधन
E-book | कार्यक्षेत्र पथप्रदर्शक | लंबाई आवृति इंद्रजालिक | जीवन-इतिहास उपकरण | बिन्दु नक्शा | Classification Tree
| Catch-MSY |
Special reports
Download XML
Summary page | Point data | आम नाम | Photos
इंटरनेट स्रोत
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: वर्ग, प्रजाति | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, खोज | World Records Freshwater Fishing | Zoological Record
Estimates based on models
Preferred temperature (Ref. 123201): 3.8 - 7.9, mean 6 °C (based on 59 cells).
Phylogenetic diversity index (Ref. 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00141 - 0.00645), 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): 3.7 ±0.5 se; based on size and trophs of closest relatives
लौटाव (Ref. 120179): निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (52 of 100).