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It can be exciting to get a fish pond, and finally get to the ultimate objective of selecting the koi, the stars of the show. In fact, it can be easy to go over the top and try to cram as many fish in there as possible, especially as koi fish all have unique designs and look stunning. But there is much more to know and consider before you can bring home a tank full of koi fish. These can go from factors such as size and design, to technical aspects like fish load, water flow rates, pond oxygen levels, type of filtration system, number of aquatic plants, types of plants in the ecosystem, types of food given, feeding schedules, frequency of changing water and ratios, and so much more.