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🌊 Marine Vulnerable 🌡️ Subtropical

Bullnose eagle ray

Myliobatis freminvillei Lesueur, 1824
Max Length
Max Weight
Lifespan
Trophic Level
3.4
Depth
0–100 m
Climate
Subtropical
Resilience
Very low
Vulnerability
61.00/100
Typical Length
70 cm
Depth Zone

📖 Overview

Found frequently in coastal waters to 10 m depth, mainly in shallow estuaries. Capable of traveling long distances, occasionally leaps out of the water. Swims in midwater. Cruises slowly over the bottom, rooting out bivalves with its beak and wings when feeding . Ovoviviparous .

Scientific Name
Myliobatis freminvillei
Authority
Lesueur, 1824
Habitat
Marine
Climate
Subtropical
Body Shape
Other
IUCN Status
VU
Depth Range
0–100 m
Latitude
42°S – 43°N
Trophic Level
3.4
Resilience
Very low
Vulnerability
61.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Disk broad with long sharply pointed wings and projecting snout. Tail very long, Few middorsal spines on disk in adults . Greyish, reddish chocolate or dusky brown above. Lower surface either pure white or whitish. Teeth green .: other.

🌀 Behaviour

Behavioural data for Bullnose eagle ray is currently being reviewed.

🦐 Diet

Diet information for Bullnose eagle ray is currently being compiled.

🥚 Reproduction

Size at Maturity
65cm 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; brackish; benthopelagic; depth range 0 - 100 m , usually 1 - 10 m. Subtropical; 43°N - 42°S, 97°W - 33°W South America.

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish
Trophic Level
3.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.09 (TL)

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Very low
Minimum doubling time
Fishing Vulnerability
61.00/100
High vulnerability
Trophic Level
3.4
Predator
Body Shape
Other
Climate Zone
Subtropical
Latitude Range
43°N – 42°S
Described By
Lesueur, 1824

👥 Community & Contribute

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