Taxonomic Remarks
Probably a junior synonym of Tetronarce tremens according to Carvalho et al., 2002 in Weigmann, 2016 (Ref. 106604).
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina revassocierade; djupintervall 24 - 168 m (Ref. 12951). Tropical
Southeast Pacific: Peru and the Galapagos Islands (Ref. 12951); including Colombia (Ref. 58465).
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 50.0 cm TL hane/ej könsbestämd; (Ref. 12951)
A semi-pelagic ray found on sand and mud bottoms as well as in the water column over deep water. Ovoviviparous (Ref. 50449).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
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).
Michael, S.W., 1993. Reef sharks and rays of the world. A guide to their identification, behavior, and ecology. Sea Challengers, Monterey, California. 107 p. (Ref. 12951)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Verktyg
Särskilda rapporter
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Uppskattningar baserade på modeller
Önskad temperatur (Ref.
123201): 13.3 - 16.9, mean 15.3 °C (based on 12 cells).
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01479 (0.00678 - 0.03229), b=2.97 (2.78 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 4.1 ±0.6 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Låg, lägsta populationsfördubblingstid 4,5-14 år (Preliminary K or Fecundity.).
Sårbarhet i fisket (Ref.
59153): Moderate vulnerability (40 of 100).
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