Xiphophorus hellerii – Colourful Ornamental Swordtail Fish
The Xiphophorus hellerii, commonly known as the Swordtail, is a beautiful and lively freshwater fish admired for its vibrant coloration, elegant body shape, and distinctive sword-shaped tail extension in mature males.
Available in a variety of ornamental colour patterns, Swordtails bring brightness, movement, and personality to planted aquariums and peaceful community tanks.
These active and hardy livebearers are well suited to both beginner and experienced aquarists. They thrive in stable, well-maintained aquariums with plenty of swimming space, aquatic plants, and compatible tank mates.
Swordtails are also fascinating to observe because they give birth to live young rather than laying eggs.
An excellent choice for aquarists seeking colourful, energetic, and easy-to-care-for freshwater fish.
Care Guide
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Parameter
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Details
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Scientific Name
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Xiphophorus hellerii
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Common Name
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Swordtail / Assorted Swordtail
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Origin
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Mexico and Central America
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Adult Size
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Approximately 10–14 cm, including sword
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Temperature
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22–28°C
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pH
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7.0–8.2
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Water Hardness
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Medium-hard to hard
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Minimum Tank Size
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90–110 L+ recommended
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Diet
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Omnivore, flakes, pellets, vegetable matter, frozen foods
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Temperament
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Generally peaceful; males may compete
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Care Level
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Easy / Beginner
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Group Size
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1 male with 2–3 females recommended
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Lifespan
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Approximately 3–5 years
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Breeding
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Livebearer
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Aquarium Type
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Planted Aquarium / Community Tank
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Important Care Notes
Swordtails are active swimmers and need adequate horizontal swimming space. A secure aquarium lid is recommended because they can jump. They also breed readily, so owners should plan for additional fish.
