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Rhina ancylostoma Bloch and Schneider, 1801
Life   Vertebrata   Fish   Rhinidae   Rhina

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Kingdom Animalia  
 Phylum Chordata  
 Class Chondrichthyes  
 Order Rajiformes  
 Family Rhinidae  
 Genus Rhina  
  Rhina ancylostoma    Bloch & Schneider, 1801 
Provider: Pofeng Lee& Shoou-Jeng Joung 
hierarchy tree    download xml    download txt    Chinese Page    
Synonyms: Rhina anclyostoma Rhina ancylostomus Rhina cyclostomus Squatina ancyclostoma   details
Citation: 臺灣魚類誌(沈等, 1993); 福建魚類誌(朱等, 1985)
Name Code: 383189
      IUCN Red List:CR  A2bd      Marine     
Suggested Link    The Fish Database of Taiwan    FishBase    Discover Life    World Register of Marine Species (WoRMS)  
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Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Rhina ancylostoma Bloch & Schneider , 1801

Bowmouth guitarfish Add your observation in Fish Watcher
Native range | All suitable habitat | Point map | Year 2100
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Rhina ancylostoma   AquaMaps   Data sources: GBIF OBIS
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Pictures | Videos |     Google image Image of Rhina ancylostoma (Bowmouth guitarfish) Rhina ancylostoma
Picture by Awai, M.

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

() > Rhinopristiformes (Shovelnose rays) > Rhinidae (Wedgefishes)
Etymology: Rhina: Greek, rhinos = nose (Ref. 45335 ) .  More on authors: Bloch & Schneider .

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

Marine; reef-associated; depth range 3 - 90 m (Ref. 30573 ).   Tropical; 42°N - 34°S, 30°E - 170°E (Ref. 114953 )

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

Indo-West Pacific: Persian Gulf (Ref. 68964 ), Red Sea and East Africa to Papua New Guinea, north to Japan, south to New South Wales, Australia.

Length at first maturity / Size / Weight / Age

Maturity: L m   ? , range 150 - 178 cm
Max length : 300 cm TL male/unsexed; (Ref. 58784 ); max. published weight: 135.0 kg (Ref. 9987 )

Short description Morphology | Morphometrics

An unmistakable guitarfish with a broad, rounded snout, large, high pectoral fins, and heavy ridges of spiky thorns over the eyes and on the back and shoulders; jaws with heavily ridged, crushing teeth in undulating rows (Ref. 5578 ). Grey or brownish above (Ref. 5578 ), white below; numerous white spots dorsally on fins, body and tail; black spots on head and shoulders but no eyespots or ocelli (Ref. 3919 ).

Biology     Glossary (e.g. epibenthic)

Inhabits coastal areas and on coral reefs, close inshore (Ref. 9915 ). Found on sand and mud bottoms (Ref. 12951 ). Sometimes found in the water column (Ref. 12951 ). Feeds mainly on bottom crustaceans and mollusks (Ref. 9915 ). Ovoviviparous (Ref. 50449 ). Produces litters of 2-11 pups (Ref. 114953 ). A row of large spines present above the eye, on the center of the nape, and on the shoulder have a defensive function (can be used for butting). Caught commonly by demersal tangle net, and occasionally trawl and longline fisheries (Ref.58048). Difficult to handle and can damage the catch when caught in trawls (Ref. 9915 ). Utilized fresh and dried-salted; the pectoral fins are the only part which is eaten (Ref. 9987 ).

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 ). With 4 in a litter (Ref. 12951 ). Size at birth 45 cm (Ref. 12951 ).

Main reference Upload your references | References | Coordinator | Collaborators

Compagno, L.J.V. and P.R. Last , 1999. Rhinidae (=Rhynchobatidae). Wedgefishes. p. 1418-1422. In K.E. Carpenter and V. Niem (eds.) FAO identification guide for fishery purposes. The Living Marine Resources of the Western Central Pacific. FAO, Rome. (Ref. 9915 )

IUCN Red List Status (Ref. 120744 )

  Vulnerable (VU)  (A2bd+3bd+4bd); Date assessed: 20 February 2015

CITES (Ref. 118484 )

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

Other (Ref. 637 )

Human uses

Fisheries: commercial FAO(Publication : search ) | FishSource |

More information

FAO areas
Food items
Food consumption
Common names
Spawning aggregation
Egg development
Larval dynamics
Aquaculture profile
Allele frequencies
Mass conversion
Stamps, Coins Misc.
Swim. type
Gill area


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Internet sources

Aquatic Commons | BHL | Cloffa | BOLDSystems | 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 | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Tree of Life | Wikipedia( Go , Search ) | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969 ): 24.4 - 29.1, mean 28.1 (based on 1422 cells). Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 1.0010   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00389 (0.00146 - 0.01036), b=3.11 (2.88 - 3.34), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245 ). Trophic Level (Ref. 69278 ):  3.6   ±0.50 se; Based on food items. Resilience (Ref. 120179 ):  Very Low, minimum population doubling time more than 14 years (Fec=4). Vulnerability (Ref. 59153 ):  Very high vulnerability (76 of 100) . Price category (Ref. 80766 ):   Medium .

Entered by Froese, Rainer Modified by Abucay, Luisa Fish Forum
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