Fish Facts

Science Activity

Children will study domestic fish varieties and then set up their own fish tank to observe.



  1. Investigate! Divide the class into small groups. Have them go through encyclopedias and books and magazines about fish to choose three kinds of fish (freshwater) suitable for a class aquarium. Suggest that they find out what the fish eat and what kind of environment they require. Your local pet store is a good place to find books and pamphlets that would be specific to caring for and monitoring the habits of fish. Encourage children to keep a notebook of information that they collect.

  2. Set up your materials! Ask children to list what would be needed to care for the fish the class is studying. The materials listed above is also a good place to start. Ask a knowledgeable employee of your local pet store to check over your list to be sure that nothing has been overlooked. When you have everything you need, set up the aquarium and let the temperature and water chemical balance adjust for several days. Then add your fish.

  3. Observe and record! Attach copies of the Observation Record on a clipboard next to the tank. Ask children to periodically visit the tank to make observations. (You may wish to do a sample observation with the class beforehand.) By looking at the chart, you will be able to tell who has had a turn to observe and who has not yet visited. The observations may be read aloud to the class at regular intervals.

  4. Suggest that children take turns feeding the fish and cleaning out the tank. (You may want to look into fish that eat algae!)


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