Acroteriobatus stehmanni, Socotra blue-spotted guitarfish

Acroteriobatus stehmanni Weigmann, Ebert & Séret, 2021

Socotra blue-spotted 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: stehmanni: Named for Dr. Matthias F.W. Stehmann for his invaluable contributions to chondrichthyan taxonomy, particularly with respect to skates..

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

Marine; demersal; depth range 36 - 43 m (Ref. 124452). Tropical

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

Western Indian Ocean: off Socotra Is. (restricted).

Size / Weight / Age

Maturity: Lm ?  range ? - 37.8 cm
Max length : 62.2 cm TL male/unsexed; (Ref. 124452); 60.2 cm TL (female)

Short description Morphology | Morphometrics

This species is distinguished by the following set of characters: dorsal surface is smooth, no prominent thorns or tubercles, except for the slightly enlarged granular denticles partially around orbital rims and rather regularly distributed along midline from nape to or to somewhat anterior to first dorsal-fin origin, none between dorsal fins and upper caudal fin; the snout semi-translucent with a few, somewhat elongated bluish-gray spots only, giving it a very reduced stripe-nosed appearance, patterning with small bluish-gray circular spots generally few and confined to symmetrical patterns on snout tip, the posterior pectoral-fin margins, a pair of tiny spots on midbody behind occipital joint, and few spots on posterior pelvic-fin margins; brown spots indistinct on body and dorsal and caudal fins; ventral surface is white except for a blackish blotch and two tiny black spots on ventral snout tip in smallest juvenile paratype; nasal lamellae 43-48; upper jaw tooth row count ca. 64-78; post-synarcual centra 181-186; total vertebral segments 194-200; total pectoral skeleton radials 63-67 (Ref. 124452).

Biology     Glossary (e.g. epibenthic)

Occurs in coastal waters. Size range from 20.8 - 62.2 cm TL, males at size 37.8 cm TL is considered very early subadult (apparently start to mature around this size) and juvenile at 20.8 cm TL; while females at 59.4 and 60.2 cm TL are presumed to be adult (Ref. 124452).

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

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

Weigmann, S., D.A. Ebert, B. Séret, 2021. Resolution of the Acroteriobatus leucospilus species complex, with a redescription of A. leucospilus (Norman, 1926) and descriptions of two new western Indian Ocean species of Acroteriobatus (Rhinopristiformes, Rhinobatidae). Marine Biodiversity (2021):51:58. (Ref. 124452)

IUCN Red List Status (Ref. 125652)


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

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Common names
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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 = No PD50 data   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00153 - 0.00597), b=3.13 (2.95 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.4   ±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 (45 of 100).