Datasheet Koi Swordtail

German name:
Swordtail (Koi breeding form)

Scientific name.
Xiphophorus Helleri

Trade name:
Kohaku, Koi Swordtail Sanke, Koi Swordtail Tricolor

Origin:
Middle and South America

Size:
5-10cm

Aquarium

Length:
100 cm

Contents:
From 100 liters

water values

Temperature:
20 – 28°C

PH value:
7 – 8

CH:
5 – 20°dKH

GH number:
5 – 30 °dGH

Behave

Number:
possible from 3 fish (group animals), surplus of females recommended

Life expectancy:
up to 5 years

Area:
no preferred area (frequent swimmers)

propagation:
Livebearer – Breeding fairly easy

Lining:
Flake food, granulate, vegetable food, frozen and live food

Behave:

peaceful, school fish

Shrimp compatible:

Yes

Difficulty level:
Beginner

Koi Swordtails stand out in the aquarium mainly because of their color scheme. The fish shine in one White and orange also have black dots. Although they are quite small, they catch your eye. The koi are swordtails peaceful and very active, like to swim around a lot. In addition, they are adaptable and get along with most other fish species without any problems. Therefore, they should best be in one medium to large aquarium be kept with lots of fish. So the koi can let off steam and always have company.

The Koi Swordtail is a very beginner friendly fish, where you can’t go wrong. As long as you have a sufficiently large aquarium with other fish, the koi swordtails feel comfortable. The aquarium should well planted be, the koi swordtail likes to swim around and hide between the green. A stream of water is also good and will help the koi move quickly. The koi are also feeding not picky and eat common fish food in different variations.

gender differences

The female the koi swordtails are in general greater. In addition, their anal fin is rounded and carries the typical pregnancy patch. At male is this gonopodium to recognize. You also have one longer caudal finthat resembles a sword.

breed

Breeding koi swordtails is also easy and, in most cases, will happen on its own once you grow up at least one female and one male are in the aquarium. The koi are viviparous. It takes about one monthuntil the young fish are born. Here it is partial up to 150 piecesbut not all survive.

The juveniles are already swimming through the water a few minutes later. In the end arise from it only 5 to 10 adult koi swordtails, which is normal. The young are reared in the same aquarium and do not require any further external care.

Note on coloring

Only at one specific color breeding there can be problems because a excessive black content on koi swordtails especially in males health problems leads. The black color leads to cancer in the fish.

If you want to have particularly beautiful Koi Swordtails with only a few black dots, you should pay attention to this when breeding. This is also good for the health of the following animals. Color breeding is not for beginners and requires a high level of care and knowledge of Koi Swordtails and their genetics.

socialization

Koi Swordtail should be kept in a community tank. There they have the opportunity to play with other fish. They are not solitary and should not be kept alone. When buying koi swordtails need the fish just a little adjustment period, but are adaptable and make friends quickly with existing groups of fish. In the case of shrimp, they should be at least 4 cm, but otherwise koi swordtails do not see them as food.

In to many males can get into arguments, but these are not dangerous for the animals. A excess of females is a good countermeasure. Otherwise, the Koi Swordtails do not argue with other fish and are rather playful and alert.