Elasmobranchii (haaien en roggen) (sharks and rays) >
Torpediniformes (Electric rays) >
Hypnidae (Coffin rays)
Etymology: Hypnos: Greek, hypnos = sleep (Ref. 45335).
More on author: Shaw.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien rifbewoner; diepte 0 - 240 m (Ref. 9710). Temperate; 18°S - 38°S, 112°E - 155°E (Ref. 114953)
Indo-West Pacific: endemic to Australia.
Lengte bij maturiteit / Grootte / Gewicht / Leeftijd
Maturity: Lm ?, range 24 - ? cm
Max length : 70.0 cm TL mannelijk / geslacht onbekend; (Ref. 2272); common length : 40.0 cm TL mannelijk / geslacht onbekend; (Ref. 6871)
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. It was reported that larger fishes, similar size to themselves have been found in the stomachs of Coffin rays, ingested whole through the large gape (Ref. 114953). Ovoviviparous (Ref. 50449). Maximum length probably to 92 cm TL (Ref. 9910). Both sexes mature at 40-48 cm TL; born at ca. 8-11 cm TL (Ref. 114953). A slow-moving species which uses its electric organs to stun prey. Also stuns people when accidentally stepped upon or handled (Ref. 9910).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). Size at birth 8 to 11 cm TL (Ref. 9910).
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. Johns Hopkins University Press, Maryland. (Ref. 35766)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gebruik door de mens
Visserij: van geen belang
Meer informatie
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Estimates based on models
Preferred temperature (Ref.
123201): 15.3 - 22.2, mean 17.4 °C (based on 134 cells).
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 1.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.7 ±0.57 se; based on food items.
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (48 of 100).
Nutrients (Ref.
124155): Calcium = 2.47 [0.28, 38.57] mg/100g; Iron = 0.157 [0.013, 1.622] mg/100g; Protein = 17.1 [13.0, 20.7] %; Omega3 = 0.302 [0.099, 0.903] g/100g; Selenium = 9.87 [1.75, 49.78] μg/100g; VitaminA = 21.6 [1.7, 276.9] μg/100g; Zinc = 0.479 [0.035, 5.305] mg/100g (wet weight);