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Xiphophorus signum
Xiphophorus signum
Slender long-sworded males; the caudal mark is clearer in females.
This slender male has a silvery violet sheen and a pale sword bordered in black. The female's caudal mark is often obscured by the male sword border.
- Adult length
- Up to 7.5 cm
- Water temperature
- 24–28 °C
- pH
- 7.2–8
- Hardness
- 10–20 dGH
- Native range
- Central America: Rio Chajmaic and Rio de la Pasion basin in Alta Verapaz, Guatemala.
- Natural habitat
- Inhabits fast-flowing waters with dense vegetation.
Keep water clean and feed varied foods; do not copy ordinary domestic swordtail parameters.
Appearance and identification
Slender and long-sworded, unlike the compact, deep-bodied xiphidium with an ordinary tail margin.
Diet and feeding
Offer varied foods.
Compatibility limits
Resemblance to common swordtails does not mean the same community suitability.
Aquarium environment
Plants do not replace water-quality maintenance.
Similar and related fish
