Northern mountain swordtail
Xiphophorus nezahualcoyotl
- Adult size
- 5 cm2 in
- Start with
- 3
- Tank length
- 30 cm12 in
- Lifespan
- 2–4 yrs
- Temperature
- 19–26 °C66–79 °F
- pH
- 5.5–7.8
- Hardness
- 1–15 dGH
- Diet
- omnivore
A cool-water swordtail that does best in a group with gentle current and no tropical heat.A cool-water swordtail that does best in a group with gentle current and no tropical heat.
Tank sizes
Good tankmates
Avoid with
- Irian Jaya rainbowfish
No shared temperature rangeNo shared temperature range
- African knifefish
African knifefish may eat Northern mountain swordtailAfrican knifefish may eat Northern mountain swordtail
- African pike
African pike may eat Northern mountain swordtailAfrican pike may eat Northern mountain swordtail
- Alligator gar
Alligator gar may eat Northern mountain swordtailAlligator gar may eat Northern mountain swordtail
- Altum angelfish
No shared temperature rangeNo shared temperature range
- Antenna ray
Antenna ray may eat Northern mountain swordtailAntenna ray may eat Northern mountain swordtail
- Arapaima
Arapaima may eat Northern mountain swordtailArapaima may eat Northern mountain swordtail
- Asian arowana
Asian arowana may eat Northern mountain swordtailAsian arowana may eat Northern mountain swordtail
- Asian upside-down catfish
Asian upside down catfish may eat Northern mountain swordtailAsian upside down catfish may eat Northern mountain swordtail
- Australian pearl arowana
Australian pearl arowana may eat Northern mountain swordtailAustralian pearl arowana may eat Northern mountain swordtail
- Barred bichir
Barred bichir may eat Northern mountain swordtailBarred bichir may eat Northern mountain swordtail
- Black bullhead
Black bullhead may eat Northern mountain swordtailBlack bullhead may eat Northern mountain swordtail
Sources
| temperature | 19–26 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium |
|---|---|---|
| ph | 5.5–7.8 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium |
| gh | 1–15 | AqAdvisor (aqadvisor.com), retrieved 2026-10-04 · medium |
| origin | Río Pánuco basin, Mexico | curated-v0 (needs expert review) · low |
| notes | A cool-water swordtail that does best in a group with gentle current and no trop | curated-v0 (needs expert review) · medium |
| beginner friendly | false | curated-v0 (needs expert review) · medium |
| care level | moderate | curated-v0 (needs expert review) · medium |
| color palette | #B8B490, #2A2A2A, #E0B040 | curated-v0 (needs expert review) · low |
| activity | active | curated-v0 (needs expert review) · medium |
| swim zone | middle | curated-v0 (needs expert review) · medium |
| temperament | peaceful | curated-v0 (needs expert review) · medium |
| fin nipper | false | curated-v0 (needs expert review) · medium |
| long finned | false | curated-v0 (needs expert review) · medium |
| territorial | false | curated-v0 (needs expert review) · medium |
| schooling | false | curated-v0 (needs expert review) · medium |
| social min | 3 | curated-v0 (needs expert review) · medium |
| schooling min | 1 | curated-v0 (needs expert review) · medium |
| diet | omnivore | curated-v0 (needs expert review) · medium |
| lifespan years | 2–4 | curated-v0 (needs expert review) · low |
| growth to adult months | 6 | curated-v0 (needs expert review) · low |
| length weight | {"a":0.012,"b":3} | curated-v0 (needs expert review) · low |
| planted safe | true | curated-v0 (needs expert review) · medium |
| body shape | livebearer | curated-v0 (needs expert review) · medium |