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Not necessarily so, some plants like water irises, cattails, rushes, will grow out of the water. Watersprite which most people place in their aquariums will change it's shape once it grows out of the water. Water lilies, which need to be kept potted, will grow and float on the surface, water hyacinth and water lettuce are floating types with long roots that will help filter the water. Also the fish will use them to spawn in. As to fish you can put in White Cloud Mountain minnows, Paradise Gouramis, Guppies, and Swordtails. However some of them will have to be brought in for the winter, unless you put in a pond heater. But if you just want to keep goldfish in there they should be fine.
The plants will also provide shade and hiding places for the fish from predators such as herons or other wading type birds. You can make caves out of rocks or bricks for the fish to swim through and hide under as well.
Not necessarily so, some plants like water irises, cattails, rushes, will grow out of the water. Watersprite which most people place in their aquariums will change it's shape once it grows out of the water. Water lilies, which need to be kept potted, will grow and float on the surface, water hyacinth and water lettuce are floating types with long roots that will help filter the water. Also the fish will use them to spawn in. As to fish you can put in White Cloud Mountain minnows, Paradise Gouramis, Guppies, and Swordtails. However some of them will have to be brought in for the winter, unless you put in a pond heater. But if you just want to keep goldfish in there they should be fine.
The plants will also provide shade and hiding places for the fish from predators such as herons or other wading type birds. You can make caves out of rocks or bricks for the fish to swim through and hide under as well.