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It is a natural parasite of the Japanese eel in its native range.
Some progress has been made in recent years to grow the leptocephali of the Japanese eel in the laboratory however.
In 2010, Greenpeace International has added the Japanese eel to its seafood red list.
It was first isolated from Japanese eels (Anguilla japonica).
Techniques for artificial breeding of the Japanese eel 'A. japonica' have been studied intensively since the 1960s.
The Japanese eel population, along with anguillid eel populations worldwide, have declined drastically in recent years.
Tsukamoto, Katsumi (1992) Discovery of the spawning area for Japanese eel.
The lake now also has rainbow trout, cherry salmon, carp, Carassius, Japanese eel.
Additionally, the Philippine Sea serves as spawning ground for Japanese eel, tuna and different whale species.
Adult Japanese eels migrate thousands of kilometers from freshwater rivers in East Asia to their spawning area without feeding.
Anguilla japonica (Japanese eel)
Lake Hamana is a commercial source of cultivated Japanese eel, nori, oysters and Chinese soft-shelled turtles.
These types of unfavorable larval transport are thought to reduce the recruitment success of the Japanese eels that reach river mouths as glass eels.
Unagi (うなぎ) is the Japanese word for freshwater eels, especially the Japanese eel, Anguilla japonica.
The Japanese eel is an important food fish in East Asia where it is raised in aquaculture ponds in most countries in the region.
New high-tech eel aquaculture plants are appearing in Asia with detrimental effects on the native Japanese eel, Anguilla japonica.
Here, Hudson Valley foie gras is served with yucca custard, and Japanese eel arrives with Louisiana hot sauce.
In more recent years more preleptocephali have been collected, and even Japanese eel eggs have been collected and genetically identified at sea on the research vessel.
Important food eel species include longfin eel, Australian long-finned eel, short-finned eel, and Japanese eel.
A variety of fish can be caught from the waters of Lake Kasumigaura, including smelt, Japanese icefish, Crucian carp, goby, Japanese eel and river prawn.
Animals on display include tilapia, Japanese eel, trout, cuttlefish, nurse sharks, Indo-pacific tarpon, Yellowfin tuna, Spotted eagle rays, and a Whale shark.
The spawning areas of some other anguillid eels, such as the Japanese eel, and the giant mottled eel were also discovered recently in the western North Pacific Ocean.
Furthermore, mature adults of the Japanese eel and giant mottled eel were captured using large midwater trawls in 2008 by Japanese scientists at the Fisheries Research Agency.
The Japanese eel, Anguilla japonica, is a species of anguillid eel found in Japan, Korea, China, Taiwan, and Vietnam as well as the northern Philippines.
In the case of the Japanese eel, spawning is likely affected by the north-south shifts of a salinity front created by an area of low salinity waters resulting from tropical rainfall.