You can sponsor this page

Rhinobatos lionotus Norman, 1926

Smoothback guitarfish
Upload your photos and videos
Google image
Image of Rhinobatos lionotus (Smoothback guitarfish)
No image available for this species;
drawing shows typical species in Rhinobatidae.

Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

Elasmobranquios (tiburones y rayas) (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 Ecología

marino; salobre demersal; anfidromo (Ref. 51243); rango de profundidad 70 - 76 m (Ref. 123963). Tropical; 24°N - 5°N, 66°E - 91°E (Ref. 114953)

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

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

Tamaño / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 75.0 cm TL macho / no sexado; (Ref. 114953)

Short description Claves de identificación | Morfología | Morfometría

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).

Biología     Glosario (por ej. 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 Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva

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 | Referencias | Coordinador : McEachran, John | Colaboradores

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

Pesquerías: escaso valor comercial
FAO - Publication: search | FishSource |

Más información

Trophic ecology
componentes alimenticios
Diet compositions
Food consumptions
Food rations
Despredadores
Ecology
Ecología
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Reproducción
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larva
Dinámica larvaria
Distribution
Países
Áreas FAO
Ecosistemas
Ocurrencias, apariciones
Introducciones
BRUVS - Videos
Anatomy
Gill areas
Cerebros
Otolitos
Physiology
Body compositions
Nutrients
Oxygen consumptions
Tipo de natación
Swimming speeds
Visual pigment(s)
Sonidos de peces
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genética
Electrophoreses
Heritabilities
Human related
Aquaculture systems
Perfiles de acuicultura
Razas
Ciguatera cases
Stamps, coins, misc.
Outreach
Colaboradores
References
Referencias

Herramientas

Special reports

Download XML

Fuentes de Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Género, Especie | 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 | Árbol de la vida | Wikipedia: Go, búsqueda | World Records Freshwater Fishing | Expediente Zoológico

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).
Nivel trófico (Ref. 69278):  3.7   ±0.4 se; based on size and trophs of closest relatives
Resiliencia (Ref. 120179):  Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (50 of 100).
Price category (Ref. 80766):   Low.