Fin's Fish Guide
The Japanese sleeper ray (Narke japonica) is a saltwater fish of the family Narkidae that grows up to 40 cm.
Asia: China, Taiwan/Ch Taipei, Hong Kong, Japan, Korea (South), Viet Nam
Description
The Japanese sleeper ray is an electric ray (Narkidae) from coastal waters of the northwest Pacific, off East Asia. The species grows to about 40 cm and has a round, flattened body disc with a short tail. In its pectoral fins it carries powerful electric organs with which it stuns prey and defends itself. As a bottom-dweller it lies half-buried on sand and mud bottoms and snaps at small invertebrates. Do not touch; the shock is powerful.
Frequently asked questions
How do you recognise the Japanese sleeper ray?
The Japanese sleeper ray has an irregular in shape body and is mainly brown. Bears sharp spines, plates or strong jaws that can cause cuts or puncture wounds; handle with care.
Where does the Japanese sleeper ray live?
The Japanese sleeper ray lives in the sea (marine waters) and is mostly found around stony or rocky ground. Asia: China, Taiwan/Ch Taipei, Hong Kong, Japan, Korea (South), Viet Nam
How big does the Japanese sleeper ray get?
The Japanese sleeper ray grows to a maximum of about 40 cm.
Is the Japanese sleeper ray dangerous to humans?
The Japanese sleeper ray can cause injury; handle it with care. Do not touch: this ray can deliver a strong electric shock that causes muscle cramp and is dangerous in the water. After a shock: get out of the water and rest; for persistent symptoms, palpitations or dizziness seek medical help.
Is the Japanese sleeper ray edible?
Yes, the Japanese sleeper ray is commonly eaten.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Narke
More from the family Narkidae
Want the complete picture on the Japanese sleeper ray?
Point your camera at the fish and Fin names the species in seconds. Free, and the Japanese sleeper ray is one of 12,519 species in the app.