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Corydoras species grow to around 2" (5cm). Your aquarium will actually be holding around 12 or 13 galls of water when you take into account the 1" at the top not filled and the water displacement from at least 1" of gravel (substrate) on the bottom. The basic rule for keeping fish is 1" of fish needs 1 gallon of water. If you do the sums you will see that you can keep a maximum of 6 Corydoras in the tank.

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16y ago

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