Feedbook/Fish

Swordtail

Xiphophorus hellerii

Swordtail side portrait: male's tail fin with sword-like extension, variable body colors

Essential gear

  • 60 cm+ tank
  • Filter
  • Heater
  • Thermometer
  • Tank lid
  • Net

Lifespan

3–5years

Water temperature

22–28°C

pH

7.0–8.5

Water column

Upper-mid level

Often active at surface

Keep in groups

Can be kept in groups

Male:female ratio 1:2–3 reduces chasing

Diet

Omnivore leaning herbivorous

Flakes, algae wafers, spirulina, vegetables

Suggested habitat

Aim for 60 cm+ tank; hard, slightly alkaline water is best. Not suited for densely planted tanks; bare or hardscape tanks are better, control breeding numbers.

Plates are husbandry references—not build plans or generator parameters. Check your own water, vessel, and stocking before you act.