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The Japanese eel (Anguilla japonica; nihon unagi (日本鰻) [2]) is a species of anguillid eel found in Japan, Korea, Taiwan, China, and Vietnam, [3] as well as the northern Philippines. Like all the eels of the genus Anguilla and the family Anguillidae , it is catadromous , meaning it spawns in the sea but lives parts of its life in freshwater.
[23] [24] As open ocean voyagers, eels need the carrying capacity of the swimbladder (which makes up 3–6% of the eel's body weight) to cross the ocean on stored energy alone. Because the eels are catadromous (living in fresh water but spawning in the sea), dams and other river obstructions can block their ability to reach inland feeding grounds.
Most eels live in the shallow waters of the ocean and burrow into sand, mud, or amongst rocks. A majority of eel species are nocturnal and thus are rarely seen. Sometimes, they are seen living together in holes, or "eel pits". Some species of eels live in deeper water on the continental shelves and over the slopes deep as 4,000 metres (13,000 ft).
The young eel larvae live only in the ocean and consume small particles called marine snow. Anguillid eels lay adhesive demersal eggs (eggs that are free-floating or attached to substrate), and most species have no parental care. [29] Japanese eels (A. japonica) can lay between 2 million and 10 million eggs. [22]
After being swallowed alive, Japanese eels were able to escape from a predator fish’s stomach and swim to freedom through the fish’s gills, new research shows.
Most eels live in the shallow waters of the ocean and burrow into sand, mud, or amongst rocks. Most eel species are nocturnal, and thus are rarely seen. Sometimes, they are seen living together in holes or "eel pits". Some eels also live in deeper water on the continental shelves and over the slopes deep as 4,000 m (13,000 ft).
Of the 32 eels that were swallowed whole by dark sleeper fish in a recent study, nine of them successfully escaped to safety Scientists Confirm How Japanese Eels Escape a Predator Fish's Stomach ...
Unagi (ウナギ) is the Japanese word for freshwater eel, particularly the Japanese eel, Anguilla japonica (日本鰻, nihon unagi). [1] Unagi is a common ingredient in Japanese cooking, often as kabayaki. It is not to be confused with saltwater eel, which is known as anago in Japanese.