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 .
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.
Behavioural data for Naru eagle ray is currently being reviewed.
Diet information for Naru eagle ray is currently being compiled.
Reproduction data for Naru eagle ray is currently being compiled.
Marine; benthopelagic. Subtropical Northwest Pacific: eastern Vietnam, Hong Kong, China, Korea and southern Japan.
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