Species · Xiphophorus hellerii

Swordtail: tank size, water and tank mates

Active, large livebearer; jumps - needs lid.

Adult size14 cm (5.5 in)
Minimum tank40 US gal
Temperature22–27 °C (72–81 °F)
pH7–8
Temperamentsemi-aggressive
Keep in groups of3+
Swimsmid
Shrimp & snailsCaution

Check a tank with Swordtail

Good tank mates for Swordtail

These species share its temperature range and temperament, with no fin-nipping or predation risk under our rules. Still check your tank size and bioload in the checker.

African butterflyfish · Agassiz's dwarf cichlid · Angelfish · Banjo catfish · Betta (male) · Black skirt tetra · Blue acara · Bristlenose pleco · Bronze corydoras · Buenos Aires tetra · Bumblebee goby · Clown pleco · Congo tetra · Convict cichlid · Dwarf gourami · Firemouth cichlid · Gardneri killifish · Gold barb · Indian glassfish · Jewel cichlid · Kribensis · Molly · Moonlight gourami · Multies (shell dweller)

Avoid with Swordtail

Common / comet goldfish (temperature) · Discus (temperature) · Fancy goldfish (temperature)

Sources

Checked 2026-11-09 · confidence: medium. These are cautious community guidelines, not guarantees. Not veterinary advice. Report an error.