Squalus megalops   (MacLeay,  1881) (Fish)
Organism information awaits expert curation
Class: Elasmobranchii

Image copyrights: Gloerfelt-Tarp, T.

Size: Females 62.5-76.6 cm in length; male 71.0 cm TL

Weight: 1.3-2.8 kg (females)

Color: Body gray to dusty brown above, becoming lighter below. No spots or blotches on body. Dorsal fins with black edges.

Body moderately elongated and fusiform; denticles of back with slender, lanceolate crowns and a single cusp in adults. Snout pointed and slightly longer than mouth width, the distance from its tip to inner edge of nostril about equal to that from latter point to anterior end of upper labial groove; nostrils with elongated anterior flaps having short accessory lobes on their medial edges; teeth alike in both jaws, small, compressed, and with a single, strongly oblique cusp, a notched outer edge, and no cusplets or serrations. First dorsal fin larger and higher than second, its origin over inner margins of pectoral fins, close to pectoral fin insertions; a strong, moderately long unmoved spine on both dorsal fins; first dorsal spine rather long, over inner margins of pectoral fins, its tip falling just below the fin apex; second dorsal spine longer and reaching above fin apex; pectoral fins rather broad, their inner corners usually acutely pointed and their posterior margins deeply concave; caudal fin asymmetrical, without a subterminal notch but with a strong ventral lobe. Caudal peduncle with a low lateral keel on each side and an upper precaudal pit.

Dioecious, internal (oviduct) fertilization, internal live bearers. Ovoviviparous, with 2 to 4 young in a litter. Gestation period is about two years. Size at birth 20-24 cm TL.

Synonym (s)
Acanthias megalops Macleay, 1881
(Senior synonym)
Acanthias vulgaris (non Risso, 1827)
(Misapplied name)
Squalus acanthias (non Linnaeus, 1758)
(Misapplied name)
Squalus acutipinnis Regan, 1908
(Junior synonym)
Squalus fernandinus (non Molina, 1782)
(Misapplied name)
Squalus probatovi Myagkov & Kondyurin, 1986
(Ambiguous synonym)

Common Name (s)
• Shortnose Spurdog (English)
Economic Importance and Threats
Importance:  Commercial
(Fisheries, gamefish. Consumed fresh, dried salted or smoked.)

Habitat:  Demersal, Coastal
Trophic Level:  Consumer
Prey:  Bony fishes, shrimps and other crustaceans, cephalopods and other elasmobranchs
Predator:  Raja wallacei (ray), Sphyrna zygaena (shark)
IUCN Status:  Data Deficient


• Andaman and Nicobar Islands, Off South Andaman Islands INDIA (Record: 1988-1992) (Depth: 200-300 mts)

Literature Source(s)
  • Soundararajan, R and Roy, SD (2004) Distributional record and biological notes on two deep-sea sharks, Centrophorus acus Garman and Squalus megalops (Macleay), from Andaman waters Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin 46(2) 178-184 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Froese, R and Pauly, D (2000) Fishbase 2000: Concepts, design and data sources ICLARM 344 pp Available at - http://www.fishbase.org
  • (2003) IUCN Red list of threatened species Available at - http://www.iucnredlist.org/
  • Fischer, W and Bianchi, G (Eds.) (1984) FAO species identification sheets for fishery purposes. Western Indian Ocean (Fishing Area 51) FAO, Rome 5 Available at - http://www.fao.org/docrep/009/ad468e/ad468e00.HTM

Page last updated on:2010-05-11

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