Add a couple of new fish every few weeks. By this rule, you'd keep 10 inches of fish in a 10-gallon aquarium. Then add three inexpensive medium size comet goldfish, and do not add more fish for three weeks. To the Top of this Page. Other Good fish for a Cool Water Aquarium.
Fancy goldfish are available in many interesting shapes and beautiful colors.
White Clouds, crabs, ghost shrimps, tadpoles, mystery snails, and live plants all do well in a cool water aquarium with goldfish, and all can eat the same food such as TetraFin Flakes. If you are looking to add a bizarre fish, a Dragon Fish may be just perfect for your aquarium. But keeping a Dragon Fish requires more skill than keeping Goldfish, and Dragon Fish need to eat live food such as Ghost Shrimp. Click here for more about Dragon Fish. Pick a Good Place for Your Cool Water Aquarium.