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Elasmobranchii (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Malacoraja: Greek, malakos = soft + Latin, raja, -ae = ray, fis (Raja sp.) (Ref. 45335); obscura: Specific name derived from the Latin obscurus, meaning dark or indistinct, in reference to the the subtle nature of the differences separating this species from its congeners..

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; bathydemersal; depth range 808 - 1105 m (Ref. 72455). Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Southwestern Atlantic: continental slope of southeastern Brazil, off the states of Espirito Santo (19°39' S, 38°38' W) and Rio de Janeiro (21°46' S, 39°53' W).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 68.0 cm TL male/unsexed; (Ref. 72455)

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator : McEachran, John | Collaborators

de Carvalho, M.R., U.L. Gomes and O.B.F. Gadig, 2005. Description of a new species of skate of the genus Malacoraja Stehmann, 1970: the first species from the southwestern Atlantic Ocean, with notes on generic monophyly and composition (Chondrichthyes: Rajidae). Neotrop. Ichthyol. 3(2):239-258. (Ref. 72455)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 01 July 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
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Ecology
Ecology

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Life cycle
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Distribution
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Anatomy
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Brains
Otoliths

Physiology
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Visual pigment(s)
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Estimates based on models

Preferred temperature (Ref. 123201): 4 - 4.5, mean 4.1 °C (based on 7 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00302 (0.00141 - 0.00645), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.6 ±0.4 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Preliminary low fecundity).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (47 of 100).

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Malacoraja obscura Carvalho, Gomes & Gadig, 2005