Rhinobatos lionotus, Smoothback guitarfish : fisheries

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Rhinobatos lionotus Norman, 1926

Smoothback guitarfish
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Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchi (squali e razze) (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: Norman.

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

marino; salmastro demersale; amfidromo (Ref. 51243); distribuzione batimetrica 70 - 76 m (Ref. 123963). Tropical; 24°N - 5°N, 66°E - 91°E (Ref. 114953)

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Indian Ocean: West Bengal to Myanmar, upper Bay of Bengal (India) to possibly Arabian Sea; Sri Lanka (Ref. 114953).

Size / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 75.0 cm TL maschio/sesso non determinato; (Ref. 114953)

Short description Morfologia | Morfometria

This species is distinguished by the following set of characters: disc is wedge-shaped, rather large, its width 35-37% TL, its length 1.2-1.3 times width; snout is relatively short, length 2.5-2.7 times interspiracular distance, ~3.4 times interorbital width; orbit diameter 1.2-1.4 times the spiracle length; nostrils are moderately oblique, length 1.3-1.5 times internarial distance; mouth width 6.3-6.9% TL; preoral length 5.5-5.9 times internarial distance; posterior nasal flaps are broad; two spiracular folds, the outermost fold subequal to marginally taller than inner fold; ridges of the rostral cartilage almost parallel, widely separated, converging slightly anteriorly but not constricted medially; anterior cartilage weakly sickle-shaped, almost truncate posteriorly; distance between the fifth gill slits 2.5-2.7 times in ventral head length; prebranchial sensory pore system distinct, extending posteriorly to margin of first gill slit; postscapular sensory canal notched, the lateral pores exposed; with weak thorn patches on supraorbit and scapular region, and row of rudimentary thorns (inconspicuous) along dorsal midline; denticles on dorsal fins densest anteriorly, more sparse posteriorly; dorsal fins are small, height of first 7.7-8.1% TL; pelvic-fin inner margin subequal to or shorter than its base length; interdorsal distance 2.3-2.9 times first dorsal-fin base; dorsal caudal margin 1.9-2.0 times the preventral margin; upper jaw with ~118 tooth rows; snout angle ~61°; pectoral radials 68-72; post-synarcual centra ~164; nasal lamellae ~49. Colouration: dorsal fins brownish anteriorly while dusky posteriorly and apically; dorsal disc of adults is uniformly brown to greenish, with or without large, regularly spaced cloudy blotches (faint orange to dusky, more or less symmetrically arranged and of irregular sizes); ventral disc and tail are pale; undersurface of snout without large, black, teardrop marking (Ref. 123963).

Biologia     Glossario (es. epibenthic)

Found on benthic inshore areas on continental shelf to at least 76 m depth (Ref. 123963). Also known to inhabit river mouths. Ovoviviparous (Ref. 50449). Confused with other species in the Indian Ocean, biology unknown (Ref. 114953).

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

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).

Main reference Upload your references | Bibliografia | Coordinatore : McEachran, John | Collaboratori

Last, P.R., B. Séret and G.J.P. Naylor, 2019. Description of Rhinobatos ranongensis sp. nov.(Rhinopristiformes: Rhinobatidae) from the Andaman Sea and Bay of Bengal with a review of its northern Indian Ocean congeners. Zootaxa 4576(2):257-287. (Ref. 123963)

IUCN Red List Status (Ref. 130435)

  Critically Endangered (CR) (A2d); Date assessed: 13 May 2019

CITES


CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Pesca: scarso interesse commerciale
FAO - Publication: search | FishSource |

Informazioni ulteriori

Stati
Aree FAO
Ecosystems
Presenze
Introduzioni
Stocks
Ecologia
Dieta
Prede
Consumo di cibo
Razione
Nomi Comuni
Sinonimi
Metabolismo
Predatori
Ecotossicologia
Riproduzione
Maturità
Deposizione
Spawning aggregation
Fecundity
Uova
Egg development
Age/Size
Accrescimento
Length-weight
Length-length
Length-frequencies
Morfometria
Morfologia
Larve
Dinamica popolazioni larvali
Reclutamento
Abbondanza
BRUVS
Bibliografia
Acquacoltura
Profilo di acquacoltura
Varietà
Genetica
Electrophoreses
Ereditarietà
Malattie
Elaborazione
Nutrients
Mass conversion
Collaboratori
Immagini
Stamps, Coins Misc.
Suoni
Ciguatera
Velocità
Modalità di nuoto
Area branchiale
Otoliths
Cervelli
Vista

Strumenti

Special reports

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Fonti Internet

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

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00295 (0.00151 - 0.00578), b=3.13 (2.96 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.7   ±0.4 se; based on size and trophs of closest relatives
Resilienza (Ref. 120179):  Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (50 of 100).
Price category (Ref. 80766):   Low.