Few months ago, I mentioned that the little has a pet fish. At first I put the fish in a small container but after few days I saw a died fish in the container. With this I decided to tranfer the fishes to a bigger container. Good thing I found a big container, now the fishes can swim freely. A friend who give the little some pond plants. Later that day, I found out that having plant in the container add more oxygen. No wonder the fishes seems to enjoy swimming right after I put the pond plants.