保育水槽 　Hatching aquarium

メダカの赤ちゃんと保護：
越冬した飼育親メダカの水槽の水温が上昇し日光も強くなる五月になると親メダカが産卵し、赤ちゃんメダカの孵化が始まります。
生まれた赤ちゃんメダカの敵は親メダカと蚊（ボウフラ）です。
孵化した赤ちゃんメダカは親メダカには餌との区別がつかず食べられる危険性があり、ボウフラは赤ちゃんメダカを餌にします。
この危険性除去のために産卵した卵の付いている水草や産卵用器（私はシュロの木の網目状の皮で作っていますが）を親メダカの水槽とは別の水槽に移し、孵化を待ちます。
ボウフラ対策は蚊がメダカの赤ちゃんのいる水槽で蚊が産卵しボウフラが発生しないように防虫ネットで覆います。
生まれたばかりのメダカの赤ちゃんは肉眼では見えませんが、数週間もすると数ミリに成長し泳ぐ姿が見え始めます。
Protection of baby killifish:
In May, when the aquarium temperature goes up and the sun gets stronger, the killifish eggs start to get hatched.
The enemies of the newly hatched killifish babies are parent killifish and mosquito larvae.
The parent killifish can’t distinguish their babies from their food because they are too tiny. And the mosquito larvae eat the baby killifish as food.
To prevent the baby killifish from being eaten by their parent fish, the waterweeds and the beds on which the eggs are laid are moved into another hatching aquarium, which is covered by the mosquito net not to have mosquito larvae in it. 
We can’t see the newly born killifish with our naked eyes, but in a few weeks they grow a few millimeters in length and we can see them swimming.