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Keeping Crayfish
You can keep crayfish in a community aquarium if you choose appropriate tankmates.
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Aquatic Snails
Aquatic snails are adaptable opportunists, and getting rid of them can be difficult.
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Freshwater Clam Problems
The aquarium store called it a “shark tooth clam.” I was wondering if I could place it in my freshwater 20-gallon tank.
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