約一ヶ月が過ぎて，水が随分澄んできたぞ。
ということで，魚を追加してみた。
一昨日にネオンテトラ10匹とメダカ色々10匹。
After about a month, the water got cleaner and cleaner.
So, I added some fish.
The day before yesterday, I put ten neon tetra and ten rice fish.
一日は皆元気だったが，翌日にはメダカが一匹しか残っていない。
前からいるのと新しいのと一匹づつだ。いつもメダカはこうなる。今回は水合わせに随分注意したのに・・・
On the day, they were fine. However, next day there was only one rice fish.
There were one that had been there, and one of the news. This happened before, so this time I took very long time to adjust water. But,...
今更ながらネットを調べたら，多分だが，思い当たるのは水流。この水槽は，大きいし水草が多いので結構強い水流にしてある。水流が強い水槽は苦手らしい。
皆さん小学校の理科を思い出してもらうと，メダカは水流に逆らって泳ぐ習性がある。どうやら，水流が強いと泳ぎ疲れて死んじゃうらしい。トホホ。
では生き残っている2匹は，競泳選手?それとも怠惰な性格?
At last, I searched the internet, and found one possible cause that is stream. This tank is big and have a lot of plants, I keep the stream rather strong. It is said that rice fish cannot take strong current.
We are taught in the elementary school that rice fish has nature of swimming against currents. If current is strong, it is said, they continue swimming hard until they die. OMG.
Then the surviving two are race swimmers, or just lazy guys?
それでメゲないのが私の性格。今日は，アルビノグローライトっちゅうのを20匹買ってきた。これはテトラだから大丈夫かな。しかし，小さいから大きいのに食われてしまわないことを祈る。
However, it is my character that do not give up there. Today, I bought twenty albino growlights. These would be OK since they are one of tetras. But, still small, I wish they won't be eaten by the others.
その時気づいたのは，やたらバルーンXXXという魚が増えていること。この水槽にも丸く膨らんだのがいるが，それが色々いた。バルーン・モーリー，バルーン・モンク・ホーシャ，バルーン・スマトラ・・・。何だか遺伝子組み換えの香りがするなぁ。イヤダイヤダ。
I noticed at the fish shop that there are many fish named as balloon something. There are one species in my tank, but many kinds there. Like balloon molly, balloon moenkhausia, balloon sumatra, etc. I am afraid they are artificially gene mixed. Horrible, horrible.
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