Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Torpediniformes (Electric rays) > Hypnidae (Coffin rays)
Etymology: Hypnos: Greek, hypnos = sleep (Ref. 45335).

Environment / Climate / Range Ecology

Marine; reef-associated; depth range ? - 240 m (Ref. 9710). Temperate; 21°S - 38°S

Length at first maturity / Size / Weight / Age

Maturity: L_m ?, range 24 - ? cm
Max length : 70.0 cm TL male/unsexed; (Ref. 2272); common length : 40.0 cm TL male/unsexed; (Ref. 6871)

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

Indo-West Pacific: endemic to Australia.

Occurs inshore and offshore, ranging from the intertidal to 240 m depth (Ref. 9910, 12951). Found buried on sand and mud bottoms; sometimes found stranded out of water by the tide but is capable of surviving for hours (Ref. 9910). Feeds on crabs, worms, and fishes. Ovoviviparous (Ref. 50449). A slow-moving species which uses its electric organs to stun prey. Also stuns people when accidentally stepped upon or handled (Ref. 9910). Maximum length probably to 92 cm TL (Ref. 9910).

Main reference Upload your references | References | Coordinator : Carvalho, Marcelo | Collaborators

Compagno, L.J.V., 1999. Checklist of living elasmobranchs. p. 471-498. In W.C. Hamlett (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes. John Hopkins University Press, Maryland.

IUCN Red List Status (Ref. 90363)

Least Concern (LC)

Threat to humans

Other (Ref. 10011)

Human uses

Fisheries: of no interest

FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 1.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01000 (-0.30300 - 0.32300), b=3.04 (2.92 - 3.16), based on all LWR estimates for this BS (Ref. 93245).

Trophic Level (Ref. 69278): 3.7 ±0.57 se; Based on food items.

Resilience (Ref. 69278): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).

Vulnerability (Ref. 59153): High to very high vulnerability (69 of 100) .

Price category (Ref. 80766): Unknown.

Hypnos monopterygius (Shaw, 1795)