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Rhinobatos rhinobatos (Linnaeus, 1758)

Common guitarfish
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Rhinobatos rhinobatos   AquaMaps   Data sources: GBIF OBIS
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Rhinobatos rhinobatos
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Rhinopristiformes (Shovelnose rays) > Rhinobatidae (Guitarfishes)
Etymology: Rhinobatos: Greek, rhinos = nose + Greek, batis, -idos = a ray (Raja sp.) (Ref. 45335).
More on author: Linnaeus.

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

Marine; brackish; demersal; depth range 0 - 100 m (Ref. 12951). Subtropical; 44°N - 17°S, 19°W - 36°E (Ref. 114953)

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

Eastern Atlantic: southern Bay of Biscay to Angola, including Mediterranean Sea.

Length at first maturity / Size / Weight / Age

Maturity: Lm 87.0, range 79 - ? cm
Max length : 185 cm TL male/unsexed; (Ref. 127374); common length : 80.0 cm TL male/unsexed; (Ref. 3261); max. published weight: 26.6 kg (Ref. 127374)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0; Anal spines: 0. Rostral ridges widely separated over their entire length; anterior nasal lobe reaching to level of inner corner of nostril, posterior nasal flap wide; spiracle with two moderately developed folds, the outer one more prominent; thorns relatively small, present around inner margin of orbits, between spiracles, on shoulders, and along midline of disc and tail; Upper surface khaki-brown, underside white (Ref. 6675).

Biology     Glossary (e.g. epibenthic)

Inhabits sandy and muddy bottoms, from the intertidal zone to about 100 m. Sometimes near rocky reefs (Ref. 12951). Slow swimming over bottom or partially buried. Feeds on benthic invertebrates, mainly crustaceans and small fishes. Males mature at ca. 56 cm TL, females at ca. 64 cm TL; born at ca. 25 cm TL (Ref. 114953). Ovoviviparous, one or two litters per year with 4-10 embryos.

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

Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). One or two litters per year, of 4-10 embryos (Ref. 6675)

Main reference Upload your references | References | Coordinator : McEachran, John | Collaborators

Schneider, W., 1990. FAO species identification sheets for fishery purposes. Field guide to the commercial marine resources of the Gulf of Guinea. Prepared and published with the support of the FAO Regional Office for Africa. Rome: FAO. 268 p. (Ref. 2683)

IUCN Red List Status (Ref. 130435: Version 2024-2)

  Critically Endangered (CR) (A2bd); Date assessed: 04 August 2020

CITES


Threat to humans

  Harmless





Human uses

Fisheries: commercial
FAO - Publication: search | FishSource |

More information

Trophic ecology
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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | Public aquariums | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 19.2 - 28, mean 26.1 °C (based on 104 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00204 (0.00165 - 0.00253), b=3.08 (3.02 - 3.14), in cm total length, based on LWR estimates for this species (Ref. 93245).
Trophic level (Ref. 69278):  4.1   ±0.5 se; based on diet studies.
Generation time: 8.2 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Resilience (Ref. 120179):  Low, minimum population doubling time 4.5 - 14 years (tmax=5; Fec=4).
Fishing Vulnerability (Ref. 59153):  High to very high vulnerability (66 of 100).
Price category (Ref. 80766):   Low.
Nutrients (Ref. 124155):  Calcium = 20.2 [3.7, 87.7] mg/100g; Iron = 0.646 [0.170, 1.792] mg/100g; Protein = 19.8 [17.7, 21.8] %; Omega3 = 0.236 [0.109, 0.521] g/100g; Selenium = 24.8 [7.5, 65.6] μg/100g; VitaminA = 6.46 [2.60, 15.59] μg/100g; Zinc = 0.552 [0.281, 1.018] mg/100g (wet weight);