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🌊 Marine Critically Endangered 🌡️ Tropical

Sicklefin devil ray

Mobula tarapacana Philippi, 1892
Max Length
Max Weight
350.0 kg
Lifespan
Trophic Level
3.8
Depth
0–1896 m
Climate
Tropical
Resilience
Very low
Vulnerability
79.00/100
Typical Length
250 cm
Depth Zone
reef

📖 Overview

Mostly oceanic, but also in coastal waters. Solitary, sometimes forms groups . Feeds on small fishes and planktonic crustaceans . Ovoviviparous . Litter number 1 . Sometimes found stranded in beaches in temperate areas . Data on female max. length from Ref. 9256. Commonly caught in tuna gillnet and in harpoon fisheries. Utilized for its gill filter plates (very high value), meat, cartilage and skin .

Scientific Name
Mobula tarapacana
Authority
Philippi, 1892
Habitat
Marine
Climate
Tropical
Body Shape
Other
IUCN Status
CR
Max Weight
350 kg
Depth Range
0–1896 m
Latitude
37°S – 50°N
Trophic Level
3.8
Resilience
Very low
Vulnerability
79.00/100
Migration
Oceanodromous
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

A large devil ray with a long head bearing short head fins; dorsal fin plain, and pectoral fins with strongly curved, swept-back tips; upper disc densely covered with small, pointed denticles and tail shorter than disc with no spine . Dark blue , olive-green to brownish above; ventral side white anteriorly, grey posteriorly, with an irregular but distinct line of demarcation . No caudal fin .: other.

🌀 Behaviour

Behavioural data for Sicklefin devil ray is currently being reviewed.

🦐 Diet

Diet information for Sicklefin devil ray is currently being compiled.

🥚 Reproduction

Size at Maturity
264.8cm TL

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 .

🌍 Habitat & Distribution

Marine; reef-associated; oceanodromous ; depth range 0 - 1896 m , usually 0 - 20 m . Tropical; 50°N - 37°S, 180°W - 180°E South Africa.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Migration
Oceanodromous
Trophic Level
3.8±0.59
🧍 Solitary
Food Items

small fishes (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.01 × L3.04 (TL)
Max Weight
350,000g

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2025

📊 Population Risk & Fisheries

Population Resilience
Very low
Minimum doubling time
Fishing Vulnerability
79.00/100
Very High vulnerability
Trophic Level
3.8
Predator
Body Shape
Other
Climate Zone
Tropical
Latitude Range
50°N – 37°S
Described By
Philippi, 1892

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