Elasmobranchii (sharks and rays) >
Torpediniformes (Electric rays) >
Narcinidae (Numbfishes)
Etymology: Diplobatis: Greek, diploos = twice + Greek, batis, -idos = a ray (Raja sp) (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range ? - 91 m (Ref. 13608). Tropical
Western Atlantic: off Guiana and Venezuela; including Brazil.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 13.7 cm TL (female)
Dorsal surface light brown, series of darker brown blotches and white and brown spots. Irregular rounded dark brown blotches on the outer margins of the pectoral and pelvic fins. Dorsal and caudal light brown. Caudal fins crossed by two brown bands, near the base and tip. Ventral surface white (Ref. 6902).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Tools
Special reports
Download XML
Internet sources
Estimates based on models
Preferred temperature (Ref.
123201): 25.1 - 28, mean 27.1 °C (based on 232 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00470 - 0.02937), b=2.88 (2.66 - 3.10), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): Low, minimum population doubling time 4.5 - 14 years (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
