Tancho is a white carp-koi with a red spot on the head, which can be in the shape of a circle, a heart or a cross. Tancho’s body is egg-shaped, swollen. The shape and size of the fins is similar to a voiletail, but the head is larger.
With age, curly growths appear on the head.
The color varieties are the most diverse: “azu-ma nishiki” – calico, “charin” – chocolate, “shishigashir” – red and red and white, “sheibungio” – black. The big popularity was won by the red cap – “tancho”. She has a pure white body with a prominent bright red growth on her head.
Often offered in local trade, similar in color to the “tancho” goldfish, having a red spot on their head rather than a growth, are not a red cap. This is a “broker”, the degenerate descendants of the pedigree ancestors.
Koi are used to decorate ponds and pools, in aquariums because of their large size and rapid growth they contain only young fish, the growth of which in this case slows down a lot. For the content in the pond or pool suitable water 5-35 C, dH up to 25 and pH 6-8.
It is advisable to contain at least 10 copies in a pond with a depth of at least 1 m and a water volume of 5 cubic meters. m. When calculating the number of fish per 1 cm length of fish should be 10 liters of water.
A flock of young Tancho fish can be kept in a species aquarium with plants. Water: 24–26 ° C, dH 5–20, KH ≥ 4, pH 6–8. Food: live, vegetable, substitutes.
Photo Tancho can be seen on the right.