Coldwater fish are harder to keep than tropical fish but require less equipment. A more powerful filter is needed to keep the water clean and because these fishes consume more oxygen than tropical types a larger tank is necessary. You should also use aquatic plants to oxygenate the water.

Fish include Goldfish, Moors, and Rudds as well as a variety of individual fish. The fish are less colourful than tropical fish but have many characteristics that make them very appealing. Moors have bulging eyes and there is also the bubble eyed gold fish known (of course) for bubbles under it’s eyes.

Any of the goldfish varieties should live happily together in the same aquarium, i.e. Orandas, Moors and lion heads will all mix together fine. It is best not to keep any of these fancy varieties in the same tank with more robust faster swimming types such as comets and common goldfish or species such as Bitterling or Rainbow dace. These faster swimming fish are generally too boisterous for the sedate fancy varieties and may out compete them for food and stress them with their constant activity.