PeekFishDiscover what makes each fish differentFishkeeping guides
EN ▾
Left-facing adult male Xiphophorus kallmani AI illustration, brassy flanks, fine orange line and black-edged sword.

Brass swordtail

Xiphophorus kallmani

Brassy metallic flanks and a black-edged long sword.

This slender male has olive-gold metallic flanks, a fine orange line and long dark-edged sword.

Adult length
Up to 10.5 cm
Water temperature
20–25.6 °C
Natural habitat
Native to the Papaloapan drainage region of Mexico.

Keep at 68–78°F, approximately 20–25.6°C.

View comparison →

Appearance and identification

Compared with the compact speckled evelynae male, this has brassy flanks and a long sword.

Same-species behaviour

Keep larger groups.

Diet and feeding

Accepts spirulina and krill flakes, small pellets and occasional frozen Daphnia or Artemia.

Compatibility limits

Consider space and fry risk.

Aquarium environment

Fry may be eaten in a partly planted tank; use a separate brood tank to save fry.

Sources

www.aquariumglaser.de ↗ 2026-10-23

www.fishbase.se ↗ 2026-10-25

www.chicagolivebearer.com ↗ 2026-10-23

PeekFish · Ornamental fish

Privacy and analytics