Acroteriobatus omanensis, Omn guitarfish

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Acroteriobatus omanensis Last, Henderson & Naylor, 2016

Omn guitarfish
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drawing shows typical species in Rhinobatidae.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Rhinopristiformes (Shovelnose rays) > Rhinobatidae (Guitarfishes)
Etymology: omanensis: Named for its type locality, Oman..

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

Marine; benthopelagic. Tropical; 27°N - 22°N, 56°E - 60°E (Ref. 114953)

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

Western Indian Ocean: Gulf of Oman.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 60.0 cm TL male/unsexed; (Ref. 114953)

Short description Morphology | Morphometrics

This small species has a wedge-shaped disc, is moderately elongate and with a narrow, triangular snout; anterior nasal flaps extending well across internasal space and are barely separated; dorsal surface with dense pattern of white ocelli; disc is rather thin, its length 1.3-1.4 times its width; anterior margins undulate, moderately concave before snout tip; outer corner of pectoral fins broadly rounded; snout angle ca. 64°; large eye, much larger than spiracles, orbit length 3.1-3.7 in preorbital length, 1.1-1.4 in interorbital space; rostral ridges well separated at the base; spiracle with 2 fleshy folds, inner fold rudimentary; rather large nostrils, oblique, length 1.2-1.3 times internasal space, anterior nasal flaps barely separated; velvety skin, entirely covered with minute denticles, no thorns nor thornlets, some barely enlarged denticles on preorbit and in median row between nape and first dorsal fin; tail 1.3-1.4 times longer than disc; tall dorsal fins widely spaced, interspace 2.7-3.2 times base length of first dorsal fin; apices angular to narrowly rounded; pectoral fin radials 67-72; total vertebral centra 185-188 (Ref. 114953).

Biology     Glossary (e.g. epibenthic)

Apparently a benthic species on inner continental shelf. Unknown life history. Maturity size unknown but a male was found mature at 50 cm TL (Ref. 114953).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : McEachran, John | Collaborators

Last, P.R., W.T. White, M.R. de Carvalho, B. Séret, M.F.W. Stehmann and G.J.P. Naylor, 2016. Rays of the world. CSIRO Publishing, Comstock Publishing Associates. i-ix + 1-790. (Ref. 114953)

IUCN Red List Status (Ref. 130435)

  Data deficient (DD) ; Date assessed: 08 February 2017

CITES


CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration
Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Spawning aggregation
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
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Abundance
BRUVS
References
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Aquaculture profile
Strains
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Stamps, Coins Misc.
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Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
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Tools

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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | 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, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5039   [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):  3.5   ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179):  Low, minimum population doubling time 4.5 - 14 years (Preliminary low fecundity).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (44 of 100).