I think everybody in his childhood has reared a fish in a bowl or bottle out of curiosity or fascination. In my childhood I used to go to a near by stream and catch a fish. I brought this fish in a bucket of water put in a bottle, normally Horlics Bottle. Although I fed the fish with rice grains cooked for our meals and bread crumbs the fish would die after few days as lack of oxygen
I never give-up this hobby and I found a friend who knew some things about fish keeping. I learnt to make cement fish tanks afterwards and reared fish in the tanks. I learnt to decorate the fish tank with water plants which I found in abundance in streams and rivers.
Fish has been domesticated in thousand years ago in China. Since the it has become a great hobby. when you watch a school of beautiful fish swiming in a well illuminated tank, it sooths our hearts. That is why it says that watching fish reduces ones blood pressure.
