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Do you know how to keep fish at home?
The fish need room(空间). They must not be crowded（拥挤）. Fish need oxygen(氧气). Fish get it from water in the tank. There must be enough water for all fish in the tank. So the size of the tank is important..
In the tank many people put small plants. They give oxygen to the water. Plants help in other ways, too. Fish can nibble(轻咬)on the plants. They hide in the plants and sleep, lay eggs there.
Both the plants and fish need light. You can put it near a window. It will get light there. But remember: a window may let cold air in. The cold can kill(杀死) your fish. Too hot water can kill your fish, too.
The fish need food and you should feed them every day. Giving them too much food is bad. It will make the water dirty. However, the fish should get just enough food. They should finish the food in 10 minutes. No extra(多余) is left. When this happens, the amount(数量)of food is right.
How to keep fish at home

Advice	____________
1.The ______ of the tank is important	Fish need enough room because they will be crowded in a small tank. They need ______ water because they get oxygen from it.
2.You can put small plants in the tank	Plants can give oxygen to the water, they also give a _______ to fish to hide, sleep and lay eggs
3.You can put the tank ______ a window, but don’t let cold air in.	Light is ______ for fish and plants. It can get in through the window. But you shouldn’t _____ cold air can also get in and cold air will kill your fish.
4.Feed the fish every day but not too ______	Too much food makes water _______ easily. When fish can finish _______ food in 10 minutes, the amount of food is right.