Koi Japanese Fish: A Class of its Own
Koi is Japanese for carp, and that’s exactly what they are. Their ancestors are the dull grey or brown colored common carp one can often find in the wild, and in China, the people there reared the common carp for food. But when these hardy fish were introduced into the waters in Japan centuries ago, they were bred for a specific purpose: color. Later on, these were called nishikigoi by the natives, or simply koi by the modern man. The koi Japanese fish have since come to be known as the world’s most beautiful ornamental pond fish.
Unlike other species of fish, the koi Japanese fish underwent its own brand of evolution. Their roots can be traced back – unbelievably so – to the common carp. In fact, koi is simply Japanese for “carp”, those fish found in the wild and hunted as food, which is why today, if you visit a Japanese household and ask to see koi, the master of the house will promptly bring you one on a platter – handsomely cooked and decorated with spices.
Indeed, during the early days in Japan, koi were bred in farmers’ ponds to supplement their rice diets. Quite impossible, one might say, that the koi Japanese fish could have come from such a dull colored, unimpressive and humble food fish. But as is often the case in such confined spaces, in-breeding became inevitable, and farmers were suddenly faced with mutations in their food supply. At first, these mutated koi were believed to be an isolated occurrence and were kept separately as pets; however more and more of the same kind appeared, until the farmers thought to make a hobby out of breeding them. Experimentation with color enhancers and enablers, and cross-breeding with other farmers’ koi became a popular hobby, and quickly spread throughout Japan. It wasn’t until the early 1900s that the koi became an international sensation, when the Tokyo Taisho Exhibition displayed the many different varieties already existent at the time.
As their colors can be more appreciated when viewed from above, koi Japanese fish are more suitable placed in a pond. However, there is another, more practical reason for doing so – koi Japanese fish grow to large lengths quickly, and keeping them in a tank or aquarium may limit their growth potential. Besides that – considering their growth rate – if one intends to rear a significant number of koi, housing them in a tank or aquarium may cause overcrowding, and stress the fish. Stress makes koi Japanese fish less immune to sickness, and they may not be as tolerant or as tough as they are supposed to be.
Koi Japanese fish are wonderful creatures and a source of both peace and entertainment for many. In Japan, they are still called nishikigoi, so one must be careful when visiting. A visitor not knowing any better and mentioning that he is fond of koi might be given the common carp on a dish, cooked to perfection and complete with garnishing. However, ask for nishikigoi and with all pride they will most definitely lead you to their garden pond.
For the ten things your HAVE TO KNOW about koi fish, visit The Proper Care And Feeding Of Koi.
