めだか
メダカは、むなびれ、はらびれ、せびれ、しりびれ、おびれの5つのひれがある。オスのせびれは切れこみがあり、しりびれは平行四辺形の形...
1日目…卵は1〜1.5mm。中にぶつぶつとしたものが見える。卵は水草などにからまっている。3日目…3日目になるとメダカの形が少し...
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