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🌊 Marine Vulnerable 🌡️ Deep-water

Smooth skate

Malacoraja senta Garman, 1885
Malacoraja Senta (Malacoraja senta)
Malacoraja Senta (Malacoraja senta)
Max Length
71 cm
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
25–1436 m
Climate
Deep-water
Resilience
Low
Vulnerability
58.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Inhabits soft mud and clay bottoms of the deeper troughs and basins, sands and shells, gravel and pebbles of the offshore fishing banks . Benthic . Salinity ranges from 32.6 to 35.4 . This species is confined to deep water. No occurrence has been found in less than 8 m of water. Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother . Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats . Egg capsules are 5.0-5.9 cm long and 3.8-4.5 cm wide . Caught too sparingly to have any commercial importance .

Scientific Name
Malacoraja senta
Authority
Garman, 1885
Habitat
Marine
Climate
Deep-water
Body Shape
Other
IUCN Status
VU
Max Length
71 cm
Depth Range
25–1436 m
Trophic Level
3.5
Resilience
Low
Vulnerability
58.00/100
Migration
Oceanodromous
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Spines are larger toward front and disappear with age on rear parts of tail. Few scapular spines. Group of spines in front of and around each eye. Adults have 1 middorsal row of many small spines, 1 row of small spines on each side, middorsal row of spines extend forward on disk to area behind eyes. Young have 2 pale crossbars on tail, each outlined by a dark blotch or band. Snout pointed . Upper surface pale brown with numerous obscure darker spots, irregular pale markings. Lower surface plain white with few small dusky spots .: other.

🌀 Behaviour

Behavioural data for Smooth skate is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous

Oviparous, paired eggs are laid. Embryos feed solely on yolk . Distinct pairing with embrace. Young may tend to follow large objects, such as their mother .

🌍 Habitat & Distribution

Marine; brackish; bathydemersal; oceanodromous ; depth range 25 - 1436 m . Deep-water; 54°N - 40°N, 74°W - 52°W foundland and southern Gulf of St.

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish 🌑 Deep Water
Migration
Oceanodromous
Trophic Level
3.5±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.00251 × L3.18 (TL)
Max TL
71cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
58.00/100
High vulnerability
Trophic Level
3.5
Predator
Body Shape
Other
Climate Zone
Deep-water
Described By
Garman, 1885

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