2torial #0705: Learn2 Set up a Freshwater Aquarium Choose your fish Different fish require different environments. To get an idea of the equipment you'll need, go to the pet or aquarium store and check out the fish selection. Consider not just looks, but the amount of care needed, temperament (aggressive or predatory fish shouldn't be put in with meek ones), the necessary tank size and, probably the most important, water type. Water type includes temperature, hard vs. soft, pH levels and so forth. If you're buying several types of fish, always check with the store manager to be sure they're compatible. Also, think about what kind of aquarium environment you want. Some people like a natural setting for their fish, with real, even indigenous plants and gravel. Others go the blue gravel and plastic plant route. If you want real plants, make sure they won't harm the particular type of fish you've chosen. Step 2