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🌊 Marine Least Concern 🌡️ Subtropical

Alis' velvet skate

Notoraja alisae Séret & Last, 2012
Max Length
51.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.8
Depth
870–1049 m
Climate
Subtropical
Resilience
Medium
Vulnerability
52.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Overview information for Alis' velvet skate is currently being compiled by our editorial team.

Scientific Name
Notoraja alisae
Authority
Séret & Last, 2012
Habitat
Marine
Climate
Subtropical
IUCN Status
LC
Max Length
51.5 cm
Depth Range
870–1049 m
Trophic Level
3.8
Resilience
Medium
Vulnerability
52.00/100
Salinity
30–40 ppt

🐟 Physical Description

This is a medium-size species with the following set of characters: disc wider than long, width 50.9-55.5% TL, length 43.8-45.7% TL; dorsal head length 17.1-19.0% TL; interspiracular distance 6.2-6.7% TL, internasal distance 7.0-8.5% TL, preorbital length 2.7-3.1 times orbit length, 3.4-3.6 interorbital; tail width at pelvic-fin axil 1.5-1.6 times its height; one rudimentary preorbital thorn; velvety dorsal and ventral surfaces of disc, covered with fine denticles; long and slender tail, entirely velvety and without enlarged thorns; lateral tail folds variably expanded posteriorly, its width sometimes greater than tail width at level of second dorsal fin; expanded nasal lobes, width of nasal curtain 8.1-9.8% TL; anterior pelvic-fin lobe shorter that posterior lobe; dorsal and ventral surfaces are pale greyish brown; total pectoral-fin radials 63; monospondylous centra 24-25, total diplospondylous centra 112-117, total centra 136-142 .: other (see remarks).

🌀 Behaviour

Behavioural data for Alis' velvet skate is currently being reviewed.

🦐 Diet

Diet information for Alis' velvet skate is currently being compiled.

🥚 Reproduction

Reproduction data for Alis' velvet skate is currently being compiled.

🌍 Habitat & Distribution

Marine; bathypelagic; depth range 870 - 1049 m . Subtropical; 17°S - 35°S, 166°E - 172°E

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
3.8±0.7

📐 Morphometrics

Length–Weight Relationship: W = 0.00562 × L3.11 (TL)
Max TL
51.5cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2017

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
52.00/100
Moderate-High vulnerability
Trophic Level
3.8
Predator
Climate Zone
Subtropical
Described By
Séret & Last, 2012

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