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Anago: Slightly more "evolved" fish, has ossified bones. Breeds in
brackish waters, lives adulthood in the sea. Not cultured-scientific
data totally lacking.

Unagi: Less evolved fish, has cartilage instead of bones. Breeds in
sal****er, lives adulthood in freshwater. Cultured-some scientific data
existing, but not complete. Baby eels currently imported from U. S.
(Atlantic), Europe, plus few others shipped to China and/or Japan for
growouts.

Chinese unagi vs. Japanese unagi: Price and taste different due to
different feed formula and labor. Usual cost of Japanese origin,
cultured vacuum packed unagi = 3 - 4X the cost of Chinese origin.

Bon Gusto,

Walter Rhee