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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.
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]
These illustrations show the steps a swallowed Japanese eel takes to free itself from a fish's stomach. - Yuha Hasegawa/Yuuki Kawabata To do that, the researchers assembled fish subjects in lab ...
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 ...
The Japanese Ministry of the Environment has officially added Japanese eel to the “endangered” category of the country's Red List of animals ranging from “threatened” to “extinct”. [9] Although about 90% of freshwater eel consumed in the U.S. are farm-raised, they are not bred in captivity. Instead, young eels are collected from the ...
Freshwater eels cut to about 5 cm (2 in) pieces, cooked in green herb sauce. Usually served hot, either as hors-d'œuvre or with Belgian fries or bread; but can also be eaten cold. Japan Unagi: Unagi is the Japanese word for freshwater eels, especially the Japanese eel. Saltwater eels are known as anago. Unagi are a common ingredient in ...
The term "eel" is also used for some other eel-shaped fish, such as electric eels (genus Electrophorus), swamp eels (order Synbranchiformes), and deep-sea spiny eels (family Notacanthidae). However, these other clades , with the exception of deep-sea spiny eels, whose order Notacanthiformes is the sister clade to true eels, evolved their eel ...