Tosai
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Revision as of 13:07, 21 April 2011 by Catxx (talk | contribs) (Reverted edits by 94.23.249.145 (talk) to last revision by PsiPro bot)
A tosai refers to a young goldfish or koi which is not yet one year old. But on the first January 1 from when it hatched, it becomes called a Nisai.