Asia: Japan.
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IUCN, International Union for Conservation of Nature and Natural Resources 1994 1994 IUCN red list of threatened animals. International Union for Conservation of Nature and Natural Resources, Gland, Switzerland and Cambridge, U.K. (Ref. 6376)
http://www.fishbase.org/references/FBRefSummary.php?id=6376&speccode=9781
