I have some pet koi in my fish pond - they are a type of carp
That's cool! I'm not a big fan of carp or really any fish I can't eat.
carp, a more southern species, is native to Vietnam and is cultivated there. Grass, silver, bighead, and black carp are known as the "Four Domesticated Fish" in China and are the most important freshwater fish species for food and traditional Chinese medicine. Bighead and silver carp are the most important fish, worldwide, in terms of total aquaculture production. Common carp, Amur carp and crucian carp are also common foodfishes in China and elsewhere. Goldfish, though, are cultivated mainly as pet fish. Common carp
longevity.
The common carp is a hardy fish, and koi retain that durability. Koi are cold-water fish, but benefit from being kept in the range, and do not react well to long, cold, winter temperatures; their immune systems are very weak below 10 °C. Koi ponds usually have a metre or more of depth in areas of the world that become warm during the summer, whereas in areas that have harsher winters, ponds generally have a minimum of . Specific pond construction has been