Rhina ancylostomus, Bowmouth guitarfish : fisheries

Rhina ancylostomus Bloch & Schneider, 1801

Bowmouth guitarfish
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Rhina ancylostomus
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Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (Haie und Rochen) (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.

Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet Ökologie

seewasser riff-verbunden; tiefenbereich 3 - 90 m (Ref. 30573). Tropical; 42°N - 34°S, 30°E - 170°E (Ref. 114953)

Verbreitung Territorien | FAO Gebiete | Ökosysteme | Vorkommen | Punkt Karte | Einführungen | 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.

Länge bei der ersten Reifung / Größe / Gewicht / Alter

Geschlechtsreife: Lm 164.0, range 150 - 178 cm
Max length : 300 cm TL Männchen/unbestimmt; (Ref. 58784); max. veröff. Gewicht: 135.0 kg (Ref. 9987)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

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     Fachlexikon (Englisch) (z.B. 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).

Lebenszyklus und Paarungsverhalten Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | 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).

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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 Rote Liste Status (Ref. 130435: Version 2025-2 (Global))

  vom Aussterben bedroht (CR) (A2bd); Date assessed: 03 December 2018

CITES


CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Other (Ref. 637)





Nutzung durch Menschen

Fischereien: kommerziell
FAO - Publication: search | FishSource |

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Schätzungen auf der Grundlage von Modellen

Bevorzugte Temperatur (Ref. 123201): 24.4 - 29.1, mean 28.1 °C (based on 1422 cells).
Phylogenetischer Diversitätsindex (Ref. 82804):  PD50 = 1.0005   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00166 - 0.00830), b=3.11 (2.91 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophische Ebene (Ref. 69278):  3.6   ±0.50 se; based on food items.
Widerstandsfähigkeit (Ref. 120179):  sehr niedrig, Verdopplung der Population dauert mehr als 14 Jahre. (Fec=4).
Anfälligkeit der Fischerei (Ref. 59153):  Very high vulnerability (90 of 100). 🛈
Preiskategorie (Ref. 80766):   Medium.
Nährstoffe (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);