Maculabatis randalli, Arabian banded whipray

Maculabatis randalli (Last, Manjaji-Matsumoto & Moore, 2012)

Arabian banded whipray
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Image of Maculabatis randalli (Arabian banded whipray)
Maculabatis randalli
Picture by Osmany, H.B.

Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes(Gênero, Espécies) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (tubarões e raias) (sharks and rays) > Myliobatiformes (Stingrays) > Dasyatidae (Stingrays) > Urogymninae
Etymology: randalli: Named for J.E. Randall, Bishop Museum; whose work on the taxonomy of Indo-Pacific fishes is legendary, and who was amongst the first authors to publish a photographic image of this species (as H. gerrardi) in his guide to the fishes of Oman (Randall, 1995).  More on authors: Last, Manjaji-Matsumoto & Moore.

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

; marinhas demersal; intervalo de profundidade 1 - 40 m (Ref. 90168).   Tropical

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Western Indian Ocean: off Kuwait, Bahrain, Qatar and Iran. known from the Persian Gulf from where it is possibly endemic (Ref. 90168).

Tamanho / Peso / Idade

Maturity: Lm ?  range ? - ? cm
Max length : 41.2 cm WD macho/indeterminado; (Ref. 90168)

Descrição suscinta Morfologia | Morfometria

This medium-sized species (to at least 62 cm DW) is distinguished by the following set of characters: disc weakly rhomboidal; preorbital snout moderately elongate with weak apical lobe, snout angle 113-119°; rounded pectoral-fin apices, angle 96-98°; small, protrusible orbits; relatively broad mouth, its width 0.9-1.2 in internasal width; distance between first gill slits 2.5-2.6 times internasal distance; distance between fifth gill slits times 1.5-1.7 times internasal distance, 27-29% of ventral head length; broad pelvic-fin base, 13-17% DW; in juveniles, the tail behind sting is subcircular with deep longitudinal ventral groove and prominent mid-lateral ridge, in adults, it is weakly depressed; 1-2 (usually 1) small, broadly heart-shaped to seed shaped suprascapular denticles, primary denticle band and thorns absent; secondary denticle band irregularly sub-oval, relatively narrow (its maximum width across scapulocoracoid barely exceeding its width at spiracles), with well-defined lateral margins, narrowly tapering near tail base; fully developed band and covering entire dorsal surface of tail by 33 cm DW; dorsal surface mainly uniformly coloured (occasionally with dark flecks in specimens smaller than 25 cm DW), disc margin sometimes paler dorsally; ventral disc uniformly whitish, not black edged; in adults, darker dorsal surface of tail sharply demarcated from paler ventral surface; in neonates and juveniles, dark tail with conspicuous white saddles, its distal portion usually almost uniformly dark; pectoral-fin radials 124-129; 108-111 total vertebral count (excluding 1st synarcual centra), 43-44 monospondylous centra, 65-68 pre-sting diplospondylous centra (Ref. 90168).

Biologia     Glossário (p.ex. epibenthic)

Known from the Persian Gulf which is mostly shallower than 40 m and with depths rarely exceeding 60 m; soft substrates, mostly sand and mud (Ref. 90168).

Ciclo de vida ou comportamento de acasalamento Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas

Referência principal Upload your references | Referências | Coordenador : McEachran, John | Colaboradores

Last, P.R., B.M. Manjaji-Matsumoto and A.B.M. Moore, 2012. Himantura randalli sp. nov., a new whipray (Myliobatoidea: Dasyatidae) from the Persian Gulf. Zootaxa 3327:20-32. (Ref. 90168)

Status na Lista Vermelha da UICN (Ref. 123251)


CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless





Uso pelos humanos

FAO - Publication: search | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 24.4 - 29.3, mean 26.9 °C (based on 128 cells).
Índice de diversidade filogenética (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00359 - 0.01840), b=3.11 (2.90 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Nível Trófico (Ref. 69278):  3.7   ±0.4 se; based on size and trophs of closest relatives
Resiliência (Ref. 120179):  Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos ().
Vulnerabilidade (Ref. 59153):  Very high vulnerability (90 of 100) .