Elasmobranchii (sharks and rays) >
Torpediniformes (Electric rays) >
Narcinidae (Numbfishes)
Etymology: Discopyge: Greek, diskos = disc shape + Greek, pyge = tail (Ref. 45335). More on author: Heckel.
Environment / Climate / Range
Ecology
Marine; demersal; depth range 5 - 165 m (Ref. 38391). Subtropical, preferred ?
Southeast Pacific: Peru and Chile (Ref. 5530). Southwest Atlantic: Uruguay and Argentina (Ref. 2806).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 53.8 cm TL male/unsexed; (Ref. 38391); 44.2 cm TL (female)
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Menni, R.C., R.A. Ringuelet and R.H. Aramburu, 1984. Peces marinos de la Argentina y Uruguay. Editorial Hemisferio Sur S.A. Buenos, Aires, Argentina. 359 p. (Ref. 2806)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 94142)
Not Evaluated
Human uses
Fisheries: of no interest
More information
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance
Tools
Special reports
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Internet sources
Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00388 - 0.02826), b=2.87 (2.64 - 3.10), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic Level (Ref.
69278): 3.3 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref.
69278): Low, minimum population doubling time 4.5 - 14 years (Assuming fecundity<100).
Vulnerability (Ref.
59153): Low to moderate vulnerability (31 of 100) .