A Lake and River

I would think that my aquarium is similar in water quality to a lake. They are both standing water so it has many similarities. In addition, a lake has aquatic life just like my aquarium. The only difference is that a lake has more fish and plants, so I would think it has a higher level of dissolved oxygen. My theory is also formed by the fact that a pond test results were almost identical to my aquarium water. However, the river I think would differ from my aquarium water. First of all, it is running water. Since it is fast water, the dissolved oxygen would be super high. There is some aquatic life, but not as much as a lake so the ammonia level would be different. Both of these waters would test the same in chlorine and pH because a certain level is required for life. Depending on whether the area surrounding the water is high in magnesium and calcium would calculate the hardness. Other than that, these are just a couple of reasons that I think my aquarium would compare this way to a lake and river.