Bentfin Devilray, Mobula thurstoni (Lloyd 1908)

Other Names: Lesser Devil Ray, Smoothtail Devil Ray, Smoothtail Mobula, Thurston's Devil Ray

Bentfin Devilrays, Mobula thurstonion the outer Great Barrier Reef, Queensland, August 2017. Source: mattytestoni / License: CC by Attribution-NonCommercial

, smoothtail devil ray, smoothtail mobula, or Thurston's devil ray

Cite this page as:
Dianne J. Bray, Mobula thurstoni in Fishes of Australia, accessed 16 Apr 2021,

Bentfin Devilray, Mobula thurstoni (Lloyd 1908)

More Info


Off Ningaloo Reef, Western Australia, and off Mackay and Port Douglas, Queensland, Elsewhere the species is known from scattered locations in the Indian, Pacific and Atlantic Oceans.


Feeds on pelagic crustaceans such as euphausid and mysid shrimps.


An aplacental viviparous species - embryos initially obtain nutrients from the yolk, then absorb enriched uterine fluid provided by the mother. Females produce a single pup (length 65-85 cm DW) after a gestation period of about one year. 


Targeted or taken as bycatch in pelagic and demersal gillnets, and purse seines in parts of its range - particularly in South Asia.


Species Citation

Dicerobatis thurstoni Lloyd, 1908, Rec. Indian Mus. 2(2): 179, pl. 4(2). Type locality: India.


Dianne J. Bray


Bentfin Devilray, Mobula thurstoni (Lloyd 1908)


Compagno, L.J.V. & Last, P.R. 1999. Families Gymnuridae, Myliobatidae, Rhinopteridae, Mobulidae. pp. 1505-1529 in Carpenter, K.E. & Niem, V.H. (eds). The Living Marine Resources of the Western Central Pacific. FAO Species Identification Guide for Fisheries Purposes. Rome : FAO Vol. 3 pp. 1397-2068.

Clark, T.B., Smith, W.D. & Bizzarro, J.J. 2006. Mobula thurstoni. The IUCN Red List of Threatened Species. Version 2015.2.. Downloaded on 06 August 2015.

Last, P.R. & Stevens, J.D. 1994. Sharks and Rays of Australia. Canberra : CSIRO Australia 513 pp.

Last, P.R. & Stevens, J.D. 2009. Sharks and Rays of Australia. Collingwood : CSIRO Publishing Australia 2, 550 pp.

Lloyd, R.E. 1908. On two new species of eagle-rays (Myliobatidae), with notes on the skull of the genus Ceratoptera. Records of the Indian Museum 2(2): 175-180.

Notarbartolo-di-Sciara, G. 1987. A revisionary study of the genus Mobula Rafinesque, 1810 (Chondrichthyes: Mobulidae) with the description of a new species. Journal of the Linnean Society of London, Zoology 91(1): 1-91.

Whitley, G.P. 1936. The Australian devil ray, Daemomanta alfredi (Krefft), with remarks on the superfamily Mobuloidea (order Batoidei). The Australian Zoologist 8(3): 164-188.

Wourms, J.P. 1977. Reproduction and development in chondrichthyan fishes. American Zoologist 17:379–410.

Quick Facts

CAAB Code:37041003

Conservation:IUCN Near Threatened

Depth:0-100 m


Max Size:180 cm DW

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CAAB distribution map