Swordtail / Aquarium Zone · Ballina
Xiphophorus hellerii
Semi-aggressive, so choose its tankmates with care. Grows to about 7 cm and suits a tank of 80 litres or more.
The fish, up close
The Calico Koi Swordtail, scientifically known as Xiphophorus hellerii, is a striking freshwater fish with a vibrant calico colour pattern resembling that of a koi fish. These fish have elongated bodies with a sword-like extension on the lower part of their tails, which is more pronounced in males. Their colouration can vary, but typically includes patches of orange, black, white, and red, creating a beautiful and eye-catching appearance. Calico Koi Swordtails are peaceful and active swimmers, making them a popular choice for community aquariums.
Care guide
Use these notes to shape a setup around the fish, then speak with our team about the tank you have in mind.
Plan your setupBehaviour
These fish are generally peaceful and social, getting along well with other peaceful fish species. They are active swimmers and enjoy exploring their environment. Male Swordtails can sometimes exhibit chasing behaviour towards females or other males, but aggression is usually minimal.
Tank planning
Calico Koi Swordtails prefer a well-planted aquarium with plenty of swimming space. They are sensitive to water quality, so regular water changes and proper filtration are essential. Maintaining stable water parameters, including a temperature range of 22-26°C, pH of 7.0-8.0, and hardness of 10-25 dGH, will help keep these fish healthy and thriving.
Practical details
Questions
For a specific fish, current stock or a tank setup question, speak with the Aquarium Zone team before travelling.
Contact the storeAquarium Zone regularly helps customers find freshwater fish in Ballina and across the Northern Rivers. Stock changes week to week, so contact the store before visiting if you are looking for Calico Koi Swordtail.
Yes. Bring your tank size, current fish list, setup photos, and any water test results so the team can help with compatibility, stocking, and care advice.
Calico Koi Swordtail is listed with this tank recommendation: A tank size of at least 80 litres is recommended for a small group of Calico Koi Swordtails to allow for swimming space and to accommodate their active nature. Ask in-store for advice based on your exact setup and tank mates.
Yes. Aquarium Zone serves aquarium hobbyists from Ballina, Lennox Head, Alstonville, Wollongbar, Bangalow, Byron Bay, Lismore, Evans Head, Mullumbimby, Casino and the wider Northern Rivers.
Aquarium Zone / Ballina
Looking for Calico Koi Swordtail? Contact us to confirm current availability and discuss whether it suits your aquarium before making the trip.
18 Southern Cross Drive
