Kohaku Swordtail (Xiphophorus helleri)
The Kohaku Swordtail is a bright and attractive captive-bred form of the classic Swordtail, named for its clean red and white colour pattern. Males develop the signature sword-like extension on the lower part of the tail, while females are usually fuller-bodied and slightly larger. Hardy, active and colourful, this variety is a strong choice for community aquariums with clean, stable, moderately hard to hard water.
Common Name
Kohaku Swordtail. Also commonly referred to as the Red & White Swordtail, Red White Kohaku Swordtail, Kohaku Sword or Swordtail Livebearer.
Scientific Name (Latin)
Xiphophorus helleri
Also widely referenced in scientific sources as Xiphophorus helleri.
| Feature | Detail |
|---|---|
| Sex | Males have a sword-like tail extension; females are fuller-bodied |
| Water Conditions | Modestly hard to hard water, stable and clean |
| Activity Level | Active and social |
| Best Tank Type | Community aquariums |
FAQ
What is the difference between male and female Kohaku Swordtails?
Males develop a distinct sword-like extension on the lower part of the tail, while females are typically fuller-bodied and slightly larger without this tail extension.
What kind of water conditions do Kohaku Swordtails prefer?
They thrive in clean, stable water with moderately hard to hard water parameters.
Are Kohaku Swordtails suitable for community tanks?
Yes, they are active and colorful and work well in community aquariums with compatible fish species.
Blake Roberts –
The Kohaku Swordtails are vibrant and active. My male has a striking red and white tail that stands out in the tank. The fish are easy to care for and get along well with other peaceful community fish. Water conditions are stable, and they seem healthy after a few weeks.
Alison Wallace –
I bought a pair of Kohaku Swordtails for my 20-gallon tank. The colors are bright and the males show off their tail beautifully. They are not aggressive and don’t stress other fish. I keep the water slightly hard and stable, which seems to suit them well.
Justin Parr –
These fish are a joy to watch. The red and white pattern is very clear and the males’ tail extensions are impressive. They are hardy and adapt quickly to the tank environment. I’ve had them for three months and they remain active and healthy.