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My first guppies
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27
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Aquarium aeration
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20
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Goldfish feeding
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18
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A Balanced Aquarium – Testing and Analysis
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40
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Goldfish maintenance
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20
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Aquarium lighting
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10
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Aquarium filtration
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13
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My first Siamese fighting fish
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28
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Goldfish habitat
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38
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The most common diseases affecting aquarium fish
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27
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Aquarium heating
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12