Rhina ancylostomus, Bowmouth guitarfish : fisheries

Rhina ancylostomus Bloch & Schneider, 1801

Bowmouth guitarfish
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Rhina ancylostomus
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Classificatie / Namen Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

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

Taxonomic Remarks
Spelling following ECoF.

Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied Ecologie

marien rifbewoner; diepte 3 - 90 m (Ref. 30573). Tropical; 42°N - 34°S, 30°E - 170°E (Ref. 114953)

Verspreiding Gebieden | FAO regio's | Ecosystemen | Voorkomen | Verspreidingskaart | Introducties | Faunafri

Indo-West Pacific, from South Africa (Natal coast), Mozambique, East Africa, Seychelles, the Red Sea, Arabia, Oman, the Persian Gulf, India, Sri Lanka, Malaysia, Indonesia (Borneo), Philippines, New Guinea, Thailand, Viet Nam, China, Taiwan Province of China, Korea, Japan, and Australia.

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturiteit: Lm 164.0, range 150 - 178 cm
Max length : 300 cm TL mannelijk / geslacht onbekend; (Ref. 58784); max. gepubliceerd gewicht: 135.0 kg (Ref. 9987)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

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).
Body shape (shape guide): elongated.

Biologie     Verklarende woordenlijst (bv. epibenthic)

Inhabits coastal areas and offshore coral reefs, close inshore (Ref. 9915). Found on sand and mud bottoms (Ref. 12951). Sometimes found in the water column (Ref. 12951). Feeds on demersal bony fishes (e.g. croakers), crustaceans (crabs, prawns), bivalves, and cephalopods (Ref. 9915, 114953). 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). Considered as to be a problem in trawls because it is very rough and spiky, difficult to handle and can be hazardous, thus they create a nuisance to trawl fishers as they are difficult to remove and their roughness can damage smaller species in the catch (Ref. 9915, 93660). Utilized fresh and dried-salted; the pectoral fins are the only part which is eaten (Ref. 9987).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

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).

Hoofdreferentie Upload uw referenties | Referenties | Coördinator | Medewerkers

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)

Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))

  Ernstig bedreigd (CR) (A2bd); Date assessed: 03 December 2018

CITES


CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Other (Ref. 637)





Gebruik door de mens

Visserij: commercieel
FAO - Publication: search | FishSource |

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Schattingen op basis van modellen

Fylogenetische diversiteitsindex
(Ref. 82804)
PD50 = 1.0005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00363 (0.00162 - 0.00814), b=3.11 (2.90 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau
(Ref. 69278)
3.6   ±0.50 se; based on food items.
Weerstandsvermogen
(Ref. 120179)
Zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (Fec=4).
Kwetsbaarheid van de visserij
(Ref. 59153)
Very high vulnerability (76 of 100). 🛈
Prijsklasse
(Ref. 80766)
Medium.
Voedingsstoffen
(Ref. 124155)
Calcium = 6.66 [1.37, 27.05] mg/100g; Iron = 0.311 [0.072, 0.881] mg/100g; Protein = 19.5 [17.3, 21.6] %; Omega3 = 0.0694 [, ] g/100g; Selenium = 45.3 [13.9, 139.1] μg/100g; VitaminA = 26.1 [8.3, 82.9] μg/100g; Zinc = 0.722 [0.351, 1.434] mg/100g (wet weight);