Elasmobranchii (sharks and rays) > Torpediniformes
(Electric rays) > Torpedinidae
Etymology: Torpedo: Latin, torpere = be sluggish (Ref. 45335).
Environment / Climate / Range
Marine; demersal; depth range 2 - 400 m (Ref. 4430), usually ? - 70 m (Ref. 27000). Deep-water; 46°N - 17°S, 18°W - 36°E
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 60.0 cm TL male/unsexed; (Ref. 13417); 41.0 cm TL (female); common length : 30.0 cm TL male/unsexed; (Ref. 13417); common length :39 cm TL (female)
Eastern Atlantic: southern Bay of Biscay and throughout the Mediterranean to Angola. Most common in tropical waters.
Found on soft bottoms, usually inshore but occasionally deeper. Feeds on small fishes and also benthic invertebrates. Ovoviviparous, with 3-21 in a litter (Ref. 12951). Size at birth 9 cm (Ref. 12951). Capable of inflicting a severe shock of up to 200 volts.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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).
Bauchot, M.-L., 1987. Raies et autres batoides. p. 845-886. In W. Fischer, M.L. Bauchot and M. Schneider (eds.) Fiches FAO d'identificationpour les besoins de la pêche. (rev. 1). Mèditerranée et mer Noire. Zone de pêche 37. Vol. II. Commission des Communautés Européennes and FAO, Rome. (Ref. 3261)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Fisheries: of no interest; aquarium: public aquariums
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01950 (0.01192 - 0.03189), b=2.88 (2.73 - 3.03), based on LWR estimates for this species & Family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 4.5 ±0.0 se; Based on diet studies.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (K=0.11).
Vulnerability (Ref. 59153
): High to very high vulnerability (65 of 100) .