Koi

The Nishikigoi (Japanese锦鲤, literally " brocaded carp"), also briefly called Koi, is a cultivated form of carp ( Cyprinus carpio). Koi or in compositions of the Japanese word for carp also - goi is common.

There are cultivated varieties of Koi, the same which bred in Europe mirror carp or Zeilkarpfen in scalation. These are called Doitsu (Japanese doitsu = " Germany, German " ) or more specifically Doitsugoi ( German carp).

Theories on the origin of Koi

The origin of the Koi is not clear. Probably come monochrome carp from Europe and were brought about 2000 years ago to Asia, where they were kept as insectivores and feed fish. Since about 1870 the Koi in Japan by aristocrats were kept as status symbols. Meanwhile, the Koi breeding is also very popular in Europe.

Cultivated forms

Will split the Koi in at least 16 major variants and over 100 sub-forms. The number of variants expanded continuously.

The most common cultivated forms:

  • Kohaku
  • Sanke
  • Showa
  • Utsurimono
  • Bekko
  • Asagi / Shusui
  • Koromo / Goromo
  • Kawarimono
  • Hikarimuji mono / Ogon
  • Hikari - moyomono
  • Hikari - Utsurimono
  • Tancho
  • Kinginrin

There are several cultivated forms that define popularity among pond owners. So-called Butterfly Koi have longer fins, hence the name as a comparison with the wings of a butterfly. Koi can achieve rates up to the five-digit euro range, depending on body type, drawing and skin quality.

Way of life

Koi have a life expectancy of up to 60 years and reach a weight of up to 5 kg with a body length of up to one meter. You create about 400,000 to 500,000 eggs and in about 4 days from the egg develops into a juvenile. Koi eat plants, insects and worms. The water temperature drops below 10 ° C, reduce the Koi their metabolism and keep at the bottom of their waters hibernation.

Attitude

Koi are bred in germ-free as possible systems and to achieve a particularly large growth, often held in Japan in huge natural ponds. Since they are social animals, they should always be kept to several. How big should be the swarm, depends on the size of the water body. It is recommended a space of at least 1 to 3 m³ per fish. The koi pond should not be exposed to direct sunlight, but not completely isolated from it. The water should be tested regularly to the pH value and the content of oxygen, nitrite, nitrate, copper, ammonium, and ammonia. The waters must have a minimum depth of 1.3 m have, since the Koi keeping at this depth hibernation. You may then not be awakened or implemented. The animals should not be fed too generously, as they do not finish even the food intake when there is still something edible is in the environment. The diet must be rich in protein, fat and carbohydrates. In breeding aids are spawning brushes as used in order to reduce the risk of fungal infection, among others.

Movies

  • Jewels in the carp pond. The world of Japanese Koi. Documentary 2011.

Swell

Http://www.tierportraet.ch/htm06b/koi.php

Http://www.fressnapf.de/ratgeber/beitrag/koi-teich

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