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How to choose starter fish for freshwater aquariums
Make sure that you've cycled your tank for at least one month.
Take a look at their fish species. They will have tags saying whether the fish are community fish, proceed with caution/community fish with other fast swimmers, or non community fish.
For most aquarium owners, community fish are your best option. You will want a mix of top feeders, mid-dwelling fish, and bottom feeders.