Someone always says how to play with birds. How to raise fish?

Fish farming is poor for three generations, and raising birds destroys life. This is the exact words, that is to say, people who used to be tired of playing with things have raised three generations of fish, that is to say, people who raise goldfish at home and those who raise ornamental fish usually look at this fish.

I don't care much about society and other things. I feel that these three generations have been ruined by this fish. It is impossible for one person to destroy them. It doesn't matter if you have fish and your career is rich. How can this ruin the hut? Birds are increasing, but some bird farmers take birds to the river to chat and play with them in the park every day. They are also smart and interesting, alas, like myna.