Fauna

Often the reason for having a pond in a garden is to keep fish, often koi, though many people keep goldfish. Both are hardy, colorful fish which require no special heating, provided the pond is located in an area which does not have extremes of temperature that would affect the fish. If fish are kept, pumps and filtration devices are usually needed in order to keep enough oxygen in the water to support them. In winter, a small heater may need to be used in cold climates to keep the water from freezing solid. Examples of common pond fish include:

• Goldfish (Common, Comet, Shubunkin varieties, Wakin and the Fantail varieties. With the possible exception of some of the fantail varieties, the fancy goldfish are not suited to pond life.)
• Koi (Nishikigoi, Butterfly Koi and Ghost Koi)
• Golden Orfe
• Golden Tench
• Rosy Red Minnows
• Mosquitofish
• Eel
• Catfish
• Bass
• Acipenser
• Carp
• Crucian carp
• Bluegill