Assorted Swordtail (Xiphophorus hellerii)

A perfect starter fish, the Red Tuxedo Swordtail is a hardy, peaceful livebearer that’s ideal for community aquariums. Known for its striking colouration, this variety features a deep black body with blue iridescence and vibrant red/orange fins.

Swordtails are livebearers, meaning females give birth to free-swimming fry rather than laying eggs. They breed readily in the home aquarium, so it’s best to keep more females than males to reduce stress from breeding behaviour.

Males develop their signature “sword” tail extension and a modified anal fin called a gonopodium, typically from around 2.5–4 cm (1–1.5"). Less dominant males may resemble females for extended periods.

Key Information

• Scientific Name: Xiphophorus hellerii
• Max Size: Up to 14 cm (5.5")
• Temperature: 15 – 27°C (60 – 80°F)
• pH: 7.0 – 8.0
• Hardness: Moderate
• Temperament: Peaceful
• Origin: Central America
• Type: Captive bred

Behaviour & Compatibility

Swordtails are active, social fish that do well in community setups.

• Best kept in groups
• Keep a higher ratio of females to males
• Compatible with:
  • Other livebearers
  • Rainbowfish
  • Dwarf cichlids
  • Peaceful cichlids under 12 cm
  • Plecos (Loricariids)
  • Peaceful invertebrates

Feeding

Swordtails are omnivores and easy to feed:

• High-quality flakes or pellets
• Supplement with small live or frozen foods for best health and colour

Why You’ll Love Them

• Bright, eye-catching colouration
• Extremely hardy and beginner-friendly
• Peaceful community fish
• Easy to breed
• Active and engaging