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🌊 Marine Vulnerable 🌡️ Subtropical

Naru eagle ray

Aetobatus narutobiei White, Furumitsu & Yamaguchi, 2013
Max Length
Max Weight
14.4 kg
Lifespan
Trophic Level
3.6
Depth
Climate
Subtropical
Resilience
Vulnerability
61.00/100
Typical Length
Depth Zone

📖 Overview

Found in shallow waters at water temperature above 15-17°C; in winter months, the species leave the shallower bays for nearby sea where water temperature is above 15°C brought by the Kuroshio current-derived warm waters .

Scientific Name
Aetobatus narutobiei
Authority
White, Furumitsu & Yamaguchi, 2013
Habitat
Marine
Climate
Subtropical
IUCN Status
VU
Max Weight
14.4 kg
Trophic Level
3.6
Vulnerability
61.00/100
Salinity
30–40 ppt

🐟 Physical Description

This medium to large-sized Aetobatus (reaching 150 cm DW) possess the following diagnostic characters: uniformly greenish grey to brownish dorsal surfaces, without pale spots or ocelli; long head, ventral length 27.4-31.9% DW; long to very long rostral lobe (longest in adult males) and narrow, tapering evenly to tip; single row of teeth plates, those in lower jaw chevron-shaped; width of lower tooth plate about 2.4 times its width and in about 18 series; 100-104 pectoral-fin radials (excluding propterygial radials anterior of eyes); 88-90 total vertebral centra (including synarcual); pelvic-fin radials 1 (with 2-5 fused elements) +17-18; males mature by about 80 cm DW; born at 33.4-35.2 cm DW .: other (see remarks); Cross section: flattened.

🌀 Behaviour

Behavioural data for Naru eagle ray is currently being reviewed.

🦐 Diet

Diet information for Naru eagle ray is currently being compiled.

🥚 Reproduction

Reproduction data for Naru eagle ray is currently being compiled.

🌍 Habitat & Distribution

Marine; benthopelagic. Subtropical Northwest Pacific: eastern Vietnam, Hong Kong, China, Korea and southern Japan.

🌿 Ecology

Zone Preferences
🌊 Marine
Trophic Level
3.6±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.01 × L3.04 (TL)
Max Weight
14,400g

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2019

📊 Population Risk & Fisheries

Fishing Vulnerability
61.00/100
High vulnerability
Trophic Level
3.6
Predator
Climate Zone
Subtropical
Described By
White, Furumitsu & Yamaguchi, 2013

👥 Community & Contribute

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