Name source
Australian Faunal Directory
Data links

Life Science Identifier (LSID):

LSIDs are persistent, location-independent,resource identifiers for uniquely naming biologically significant resources including species names, concepts, occurrences, genes or proteins, or data objects that encode information about them. To put it simply, LSIDs are a way to identify and locate pieces of biological information on the web.

Data Links


For a JSON view of this data, click here


To use WMS services, copy and paste the following GetCapabilities URL into your OGC client (e.g. uDIG, ESRI ArcGIS) monopterygius
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Further details

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Species presence
 Recorded In Australia
 Marine Habitats
Conservation status
IUCNLeast Concern

Occurrence records map

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  • representative image of taxa
    Source: Australian National Fish Collection Images
    Image by: Australian National Fish Collection, CSIRO
    Rights: Australian National Fish Collection, CSIRO, Image enhancement funded by CSIRO/FRDC


The unusual pear -like shape of the coffin ray distinguishes it from all other rays. Its body is flabby, with the two large, kidney -shaped electric organs visible on both sides of the head. The pectoral fins form a greatly enlarged disc about as wide as long, that is thick at the center and thin at the margins. ... source: Wikipedia

Online resources

Australian National Fish Collection Images
Images, Occurrence record, Authoritative image
Encyclopedia of Life
Description, Images, Occurrence record
Marine Life Society of South Australia
Images, Occurrence record
Reef Life Survey Images
Images, Occurrence record
Description, Distribution, Images, Occurrence record

Species Lists

Queensland : Conservation Status
taxonId: 22616
Kingdom: animals
Class: cartilaginous fishes
Family: Hypnidae
scientificNameAuthorship: (Shaw & Nodder, 1795)
status: #N/A
sourceStatus: #N/A
QLD_NCA_status_description: #N/A
Endemicity: QA
Endemicity_description: Australian endemic
Museums Field Guide apps species profiles – vertebrates
Brief description: Shaped like two discs, one large and one small.
Description : Shaped like two discs; the head and pectoral fins form a large disc, while a second smaller disc is formed by the pelvic fins. Located on the second disc are two small dorsal fins, immediately followed by a similar-looking caudal fin. Body size up to 60 cm.
Biology : The Coffin Ray can deliver a powerful electric shock with an electric organ located in each pectoral fin. This organ is used to shock crabs, worms and fishes, which make up its diet. To swallow relatively large prey whole, it is able to greatly expand its mouth. When seen by divers it is usually buried in the sediment where a tell-tale rounded depression gives away its presence. The electric organs of the torpedo rays (family Torpedinidae) can deliver strong electric shocks (50 amps, with peak of pulses sometimes exceeding 1 kilowatt).
Habitat: Sand and mud bottoms in shallow bays and estuaries, but is also known to depths over 200 m.
Maximum size (cm): 60
Diet: Carnivore
Dangerous: It can deliver a strong electric shock when touched by scuba divers.
Colours: Grey, Brown, Black
Distribution: Eastern, southern and western Australia.
Habitat types: Marine
Depth: Shallow (1-30m),Deep (>30m)
Water column: On or near seafloor
Commercial species: False
Author credit: Mark McGrouther / Australian Museum

Names and sources

Accepted name Source
Hypnos monopterygius


Synonyms Source
Hypnarche monopterygium (Shaw & Nodder, 1795)
Published in: Whitley, G.P. 1940. Illustrations of some Australian fishes. Aust. Zool. Vol. 9 (4) pp. 397-428 figs 1-45 pls 30-31
Hypnarche monopterygium (Shaw & Nodder, 1795) (Shaw & Nodder, 1795) (Shaw & Nodder, 1795)
Hypnos monopterygium (Shaw & Nodder, 1795)
Published in: Whitley, G.P. 1931. New names for Australian fishes. Aust. Zool. Vol. 6 (4) pp. 310-334 1 fig. pls 25-27
Hypnos monopterygium (Shaw & Nodder, 1795) (Shaw & Nodder, 1795) (Shaw & Nodder, 1795)
Lophius monopterygius Shaw & Nodder, 1795 Shaw & Nodder, 1795 Shaw & Nodder, 1795
Published in: Shaw, G. & Nodder, F.P. 1795. The Naturalist's Miscellany, or coloured figures of natural objects; drawn and described from nature. London Vol. 6 pls 196–230, unnumbered pages
Hypnarche subnigra Duméril, 1852
Hypnarche subnigrum (Duméril, 1852) (Duméril, 1852) (Duméril, 1852)
Hypnos subnigrum Duméril, 1852 Duméril, 1852 Duméril, 1852
Published in: Duméril, A.H.A. 1852. Monographie de la famille des torpédiniens, ou poissons plagiostomes électriques. Rev. Mag. Zool. (Paris) Ser. 2 Vol. 4 pp. 270-285
Hypnarche subnigra Duméril, 1852
Published in: McCulloch, A.R. 1929. A check-list of the fishes recorded from Australia. Part I. Mem. Aust. Mus. Vol. 5 pp. 1–144
Hypnarche subnigrum (Duméril, 1852)
Published in: Garman, S. 1913. The Plagiostomia (sharks, skates and rays). Mem. Mus. Comp. Zool. Harv. Univ. Vol. 36 pp. 1-528 pls 1-77

Common Names

Common name Source
Coffin Ray
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Australian Numbfish
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Electric Ray
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Large Numbfish
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Short-tail Electric Ray
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Short-tailed Electric Ray
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Working classification

Hypnos monopterygius  Recorded in Australia

Occurrence records

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Name references found in the Biodiversity Heritage Library

Name references found in the TROVE - NLA