-
- About this page
- Languages
- User feedbacks
- Citation
- Uploads
-
Related species
- Species in
Somniosus - Species in
Somniosidae - - Classification -
- Somniosidae
- Squaliformes
- 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. |
| Somniosus rostratus AquaMaps Data sources: GBIF OBIS |
Upload your photos and videos
Pictures | Google image
Somniosus rostratus
Male picture by Cambraia Duarte, P.M.N. (c)ImagDOP
Pictures | Google image
Male picture by Cambraia Duarte, P.M.N. (c)ImagDOP
Spain country information
Common names:
Little sleeper shark, Tauró boreal, Tiburón boreal
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Found in Galicia (Ref. 86578). Also Ref. 113585.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/sp.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Compagno, L.J.V., 1984
National Database: ICTIMED
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Found in Galicia (Ref. 86578). Also Ref. 113585.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/sp.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Compagno, L.J.V., 1984
National Database: ICTIMED
Common names from other countries
Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii (sharks and rays) > Squaliformes (Sleeper and dogfish sharks) > Somniosidae (Sleeper sharks)
Etymology: Somniosus: Latin for sleepy, reflecting Lesueur’s surmise that these sharks are slow or sluggish because of their relatively small fins (hence the name sleeper sharks) (See ETYFish); rostratus: Latin for beaked, referring to its elongated rostrum (See ETYFish).
More on author: Risso.
Etymology: Somniosus: Latin for sleepy, reflecting Lesueur’s surmise that these sharks are slow or sluggish because of their relatively small fins (hence the name sleeper sharks) (See ETYFish); rostratus: Latin for beaked, referring to its elongated rostrum (See ETYFish).
More on author: Risso.
Environment: milieu / climate zone / depth range / distribution range Ecology
Marine; bathydemersal; depth range 180 - 2734 m (Ref. 106604). Deep-water; 47°N - 43°S
Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Eastern Atlantic and the Mediterranean.
Length at first maturity / Size / Weight / Age
Maturity: Lm 108.0, range 82 - 134 cm
Max length : 143 cm TL male/unsexed; (Ref. 26346); common length : 100.0 cm TL male/unsexed; (Ref. )
Max length : 143 cm TL male/unsexed; (Ref. 26346); common length : 100.0 cm TL male/unsexed; (Ref. )
Short description Identification keys | Morphology | Morphometrics
Dorsal spines (total): 0; Anal spines: 0. Diagnosis: Somniosus rostratus is distinguished from S. longus in having overall length of second dorsal shorter than first dorsal fin 76-88% (vs. almost equal 91-100%); horizontal diameter of eye less than 37% (mean 33%) of length from snout tip to eye (vs. >37, mean 46%); number of tooth rows in upper jaw 53 (vs. 56-57); and spiral valve counts 23 (vs. 26-27) (Ref. 50224).
A rare species (Ref. 26346) found on outer continental shelves and upper slopes (Ref. 247). Probably feeds on deepwater bottom fishes and invertebrates (Ref. 247). Ovoviviparous (Ref. 205), length at birth 21-28 cm TL (Ref. 26346). Utilized as fishmeal and possibly as food fish (Ref. 247).
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ovoviviparous (Ref. 247). Young born at 21-28 cm (Ref. 26346). Distinct pairing with embrace (Ref. 205).
Main reference
Upload your references | References | Coordinator | Collaborators
Yano, K., J.D. Stevens and L.J.V. Compagno, 2004. A review of the systematics of the sleeper shark genus Somniosus with redescriptions of Somniosus (Somniosus) antarcticus and Somniosus (Rhinoscymnus) longus (Squaliformes: Somniosidae). Ichthyol. Res. 51:360-373. (Ref. 50224)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Least Concern (LC) ; Date assessed: 21 November 2019
Threat to humans
Harmless
Human uses
Fisheries: minor commercial
FAO(Fisheries: production; publication : search) | FishSource | Sea Around Us
More information
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycle
Reproduction
Maturity
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Reproduction
Maturity
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics
Anatomy
Gill area
Brain
Otolith
Gill area
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
Genetics
Heterozygosity
Heritability
Genetics
Heterozygosity
Heritability
Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.
Tools
E-book | Field guide | Identification keys | Length-frequency wizard | Life-history tool | Point map | Classification Tree
| Catch-MSY |
Special reports
Download XML
Internet sources
Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes(genus, species) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record
Estimates based on models
Preferred temperature (Ref. 115969): 8.6 - 14.2, mean 13.2 (based on 122 cells).
Phylogenetic diversity index (Ref. 82804): PD50 = 0.5313 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00380 (0.00164 - 0.00880), b=3.14 (2.95 - 3.33), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278): 4.2 ±0.4 se; based on diet studies.
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).
Climate Vulnerability (Ref. 125649): Moderate vulnerability (39 of 100).